Microscale assessment of iodate fortificant in food-grade salt using the potassium iodide/polyvinyl alcohol colorimetric reagent

A rapid and straightforward spectrophotometric measurement of iodate in food-grade sodium chloride was developed based on the formation of a purple-red polyvinyl alcohol-iodine complex monitored at 490 nm. The conditions that influence the colorimetric reactions were optimized using a univariate app...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Galiga, Henley F. [verfasserIn] Sevilla, Fortunato B. [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2022

Schlagwörter:	Food-grade salt Iodate Polyvinyl alcohol Polyvinyl alcohol/iodine complex Microscale spectrophotometry

Übergeordnetes Werk:	Enthalten in: Journal of food composition and analysis - Orlando, Fla. : Academic Press, 1987, 110
Übergeordnetes Werk:	volume:110

DOI / URN:	10.1016/j.jfca.2022.104558

Katalog-ID:	ELV00783487X

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520			\|a A rapid and straightforward spectrophotometric measurement of iodate in food-grade sodium chloride was developed based on the formation of a purple-red polyvinyl alcohol-iodine complex monitored at 490 nm. The conditions that influence the colorimetric reactions were optimized using a univariate approach. The method exhibited optimum results using 2% polyvinyl alcohol, 10 mM KI, and 0.5 M phosphoric acid. A matrix-matched calibration curve was prepared to eliminate interference due to the presence of NaCl and to provide a direct reading of iodate concentration in salt from the absorbance reading. Under optimum conditions, a linear calibration plot was observed from 5 to 140 mg iodate per kilogram (r = 0.9931). The method exhibited a sensitivity of 6.8 × 10−3 (mg iodate per kg of salt)−1 with a detection limit of 0.61 mg kg−1. The method was applied in actual samples, and the results agreed well with the titration method at a 95% confidence level using a paired t-test. The method supports the green analytical method as evaluated using Green Analytical Procedure Index (GAPI) and Analytical Eco-scale.
650		4	\|a Food-grade salt
650		4	\|a Iodate
650		4	\|a Polyvinyl alcohol
650		4	\|a Polyvinyl alcohol/iodine complex
650		4	\|a Microscale spectrophotometry
700	1		\|a Sevilla, Fortunato B. \|e verfasserin \|4 aut
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allfields	10.1016/j.jfca.2022.104558 doi (DE-627)ELV00783487X (ELSEVIER)S0889-1575(22)00176-4 DE-627 ger DE-627 rda eng 630 640 540 660 VZ 58.34 bkl Galiga, Henley F. verfasserin aut Microscale assessment of iodate fortificant in food-grade salt using the potassium iodide/polyvinyl alcohol colorimetric reagent 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A rapid and straightforward spectrophotometric measurement of iodate in food-grade sodium chloride was developed based on the formation of a purple-red polyvinyl alcohol-iodine complex monitored at 490 nm. The conditions that influence the colorimetric reactions were optimized using a univariate approach. The method exhibited optimum results using 2% polyvinyl alcohol, 10 mM KI, and 0.5 M phosphoric acid. A matrix-matched calibration curve was prepared to eliminate interference due to the presence of NaCl and to provide a direct reading of iodate concentration in salt from the absorbance reading. Under optimum conditions, a linear calibration plot was observed from 5 to 140 mg iodate per kilogram (r = 0.9931). The method exhibited a sensitivity of 6.8 × 10−3 (mg iodate per kg of salt)−1 with a detection limit of 0.61 mg kg−1. The method was applied in actual samples, and the results agreed well with the titration method at a 95% confidence level using a paired t-test. The method supports the green analytical method as evaluated using Green Analytical Procedure Index (GAPI) and Analytical Eco-scale. Food-grade salt Iodate Polyvinyl alcohol Polyvinyl alcohol/iodine complex Microscale spectrophotometry Sevilla, Fortunato B. verfasserin aut Enthalten in Journal of food composition and analysis Orlando, Fla. : Academic Press, 1987 110 Online-Ressource (DE-627)267328400 (DE-600)1469801-8 (DE-576)259483710 0889-1575 nnns volume:110 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 58.34 Lebensmitteltechnologie VZ AR 110
spelling	10.1016/j.jfca.2022.104558 doi (DE-627)ELV00783487X (ELSEVIER)S0889-1575(22)00176-4 DE-627 ger DE-627 rda eng 630 640 540 660 VZ 58.34 bkl Galiga, Henley F. verfasserin aut Microscale assessment of iodate fortificant in food-grade salt using the potassium iodide/polyvinyl alcohol colorimetric reagent 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A rapid and straightforward spectrophotometric measurement of iodate in food-grade sodium chloride was developed based on the formation of a purple-red polyvinyl alcohol-iodine complex monitored at 490 nm. The conditions that influence the colorimetric reactions were optimized using a univariate approach. The method exhibited optimum results using 2% polyvinyl alcohol, 10 mM KI, and 0.5 M phosphoric acid. A matrix-matched calibration curve was prepared to eliminate interference due to the presence of NaCl and to provide a direct reading of iodate concentration in salt from the absorbance reading. Under optimum conditions, a linear calibration plot was observed from 5 to 140 mg iodate per kilogram (r = 0.9931). The method exhibited a sensitivity of 6.8 × 10−3 (mg iodate per kg of salt)−1 with a detection limit of 0.61 mg kg−1. The method was applied in actual samples, and the results agreed well with the titration method at a 95% confidence level using a paired t-test. The method supports the green analytical method as evaluated using Green Analytical Procedure Index (GAPI) and Analytical Eco-scale. Food-grade salt Iodate Polyvinyl alcohol Polyvinyl alcohol/iodine complex Microscale spectrophotometry Sevilla, Fortunato B. verfasserin aut Enthalten in Journal of food composition and analysis Orlando, Fla. : Academic Press, 1987 110 Online-Ressource (DE-627)267328400 (DE-600)1469801-8 (DE-576)259483710 0889-1575 nnns volume:110 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 58.34 Lebensmitteltechnologie VZ AR 110
allfields_unstemmed	10.1016/j.jfca.2022.104558 doi (DE-627)ELV00783487X (ELSEVIER)S0889-1575(22)00176-4 DE-627 ger DE-627 rda eng 630 640 540 660 VZ 58.34 bkl Galiga, Henley F. verfasserin aut Microscale assessment of iodate fortificant in food-grade salt using the potassium iodide/polyvinyl alcohol colorimetric reagent 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A rapid and straightforward spectrophotometric measurement of iodate in food-grade sodium chloride was developed based on the formation of a purple-red polyvinyl alcohol-iodine complex monitored at 490 nm. The conditions that influence the colorimetric reactions were optimized using a univariate approach. The method exhibited optimum results using 2% polyvinyl alcohol, 10 mM KI, and 0.5 M phosphoric acid. A matrix-matched calibration curve was prepared to eliminate interference due to the presence of NaCl and to provide a direct reading of iodate concentration in salt from the absorbance reading. Under optimum conditions, a linear calibration plot was observed from 5 to 140 mg iodate per kilogram (r = 0.9931). The method exhibited a sensitivity of 6.8 × 10−3 (mg iodate per kg of salt)−1 with a detection limit of 0.61 mg kg−1. The method was applied in actual samples, and the results agreed well with the titration method at a 95% confidence level using a paired t-test. The method supports the green analytical method as evaluated using Green Analytical Procedure Index (GAPI) and Analytical Eco-scale. Food-grade salt Iodate Polyvinyl alcohol Polyvinyl alcohol/iodine complex Microscale spectrophotometry Sevilla, Fortunato B. verfasserin aut Enthalten in Journal of food composition and analysis Orlando, Fla. : Academic Press, 1987 110 Online-Ressource (DE-627)267328400 (DE-600)1469801-8 (DE-576)259483710 0889-1575 nnns volume:110 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 58.34 Lebensmitteltechnologie VZ AR 110
allfieldsGer	10.1016/j.jfca.2022.104558 doi (DE-627)ELV00783487X (ELSEVIER)S0889-1575(22)00176-4 DE-627 ger DE-627 rda eng 630 640 540 660 VZ 58.34 bkl Galiga, Henley F. verfasserin aut Microscale assessment of iodate fortificant in food-grade salt using the potassium iodide/polyvinyl alcohol colorimetric reagent 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A rapid and straightforward spectrophotometric measurement of iodate in food-grade sodium chloride was developed based on the formation of a purple-red polyvinyl alcohol-iodine complex monitored at 490 nm. The conditions that influence the colorimetric reactions were optimized using a univariate approach. The method exhibited optimum results using 2% polyvinyl alcohol, 10 mM KI, and 0.5 M phosphoric acid. A matrix-matched calibration curve was prepared to eliminate interference due to the presence of NaCl and to provide a direct reading of iodate concentration in salt from the absorbance reading. Under optimum conditions, a linear calibration plot was observed from 5 to 140 mg iodate per kilogram (r = 0.9931). The method exhibited a sensitivity of 6.8 × 10−3 (mg iodate per kg of salt)−1 with a detection limit of 0.61 mg kg−1. The method was applied in actual samples, and the results agreed well with the titration method at a 95% confidence level using a paired t-test. The method supports the green analytical method as evaluated using Green Analytical Procedure Index (GAPI) and Analytical Eco-scale. Food-grade salt Iodate Polyvinyl alcohol Polyvinyl alcohol/iodine complex Microscale spectrophotometry Sevilla, Fortunato B. verfasserin aut Enthalten in Journal of food composition and analysis Orlando, Fla. : Academic Press, 1987 110 Online-Ressource (DE-627)267328400 (DE-600)1469801-8 (DE-576)259483710 0889-1575 nnns volume:110 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 58.34 Lebensmitteltechnologie VZ AR 110
allfieldsSound	10.1016/j.jfca.2022.104558 doi (DE-627)ELV00783487X (ELSEVIER)S0889-1575(22)00176-4 DE-627 ger DE-627 rda eng 630 640 540 660 VZ 58.34 bkl Galiga, Henley F. verfasserin aut Microscale assessment of iodate fortificant in food-grade salt using the potassium iodide/polyvinyl alcohol colorimetric reagent 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A rapid and straightforward spectrophotometric measurement of iodate in food-grade sodium chloride was developed based on the formation of a purple-red polyvinyl alcohol-iodine complex monitored at 490 nm. The conditions that influence the colorimetric reactions were optimized using a univariate approach. The method exhibited optimum results using 2% polyvinyl alcohol, 10 mM KI, and 0.5 M phosphoric acid. A matrix-matched calibration curve was prepared to eliminate interference due to the presence of NaCl and to provide a direct reading of iodate concentration in salt from the absorbance reading. Under optimum conditions, a linear calibration plot was observed from 5 to 140 mg iodate per kilogram (r = 0.9931). The method exhibited a sensitivity of 6.8 × 10−3 (mg iodate per kg of salt)−1 with a detection limit of 0.61 mg kg−1. The method was applied in actual samples, and the results agreed well with the titration method at a 95% confidence level using a paired t-test. The method supports the green analytical method as evaluated using Green Analytical Procedure Index (GAPI) and Analytical Eco-scale. Food-grade salt Iodate Polyvinyl alcohol Polyvinyl alcohol/iodine complex Microscale spectrophotometry Sevilla, Fortunato B. verfasserin aut Enthalten in Journal of food composition and analysis Orlando, Fla. : Academic Press, 1987 110 Online-Ressource (DE-627)267328400 (DE-600)1469801-8 (DE-576)259483710 0889-1575 nnns volume:110 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 58.34 Lebensmitteltechnologie VZ AR 110
language	English
source	Enthalten in Journal of food composition and analysis 110 volume:110
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topic_facet	Food-grade salt Iodate Polyvinyl alcohol Polyvinyl alcohol/iodine complex Microscale spectrophotometry
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author	Galiga, Henley F.
spellingShingle	Galiga, Henley F. ddc 630 bkl 58.34 misc Food-grade salt misc Iodate misc Polyvinyl alcohol misc Polyvinyl alcohol/iodine complex misc Microscale spectrophotometry Microscale assessment of iodate fortificant in food-grade salt using the potassium iodide/polyvinyl alcohol colorimetric reagent
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topic_title	630 640 540 660 VZ 58.34 bkl Microscale assessment of iodate fortificant in food-grade salt using the potassium iodide/polyvinyl alcohol colorimetric reagent Food-grade salt Iodate Polyvinyl alcohol Polyvinyl alcohol/iodine complex Microscale spectrophotometry
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title	Microscale assessment of iodate fortificant in food-grade salt using the potassium iodide/polyvinyl alcohol colorimetric reagent
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title_full	Microscale assessment of iodate fortificant in food-grade salt using the potassium iodide/polyvinyl alcohol colorimetric reagent
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title_sort	microscale assessment of iodate fortificant in food-grade salt using the potassium iodide/polyvinyl alcohol colorimetric reagent
title_auth	Microscale assessment of iodate fortificant in food-grade salt using the potassium iodide/polyvinyl alcohol colorimetric reagent
abstract	A rapid and straightforward spectrophotometric measurement of iodate in food-grade sodium chloride was developed based on the formation of a purple-red polyvinyl alcohol-iodine complex monitored at 490 nm. The conditions that influence the colorimetric reactions were optimized using a univariate approach. The method exhibited optimum results using 2% polyvinyl alcohol, 10 mM KI, and 0.5 M phosphoric acid. A matrix-matched calibration curve was prepared to eliminate interference due to the presence of NaCl and to provide a direct reading of iodate concentration in salt from the absorbance reading. Under optimum conditions, a linear calibration plot was observed from 5 to 140 mg iodate per kilogram (r = 0.9931). The method exhibited a sensitivity of 6.8 × 10−3 (mg iodate per kg of salt)−1 with a detection limit of 0.61 mg kg−1. The method was applied in actual samples, and the results agreed well with the titration method at a 95% confidence level using a paired t-test. The method supports the green analytical method as evaluated using Green Analytical Procedure Index (GAPI) and Analytical Eco-scale.
abstractGer	A rapid and straightforward spectrophotometric measurement of iodate in food-grade sodium chloride was developed based on the formation of a purple-red polyvinyl alcohol-iodine complex monitored at 490 nm. The conditions that influence the colorimetric reactions were optimized using a univariate approach. The method exhibited optimum results using 2% polyvinyl alcohol, 10 mM KI, and 0.5 M phosphoric acid. A matrix-matched calibration curve was prepared to eliminate interference due to the presence of NaCl and to provide a direct reading of iodate concentration in salt from the absorbance reading. Under optimum conditions, a linear calibration plot was observed from 5 to 140 mg iodate per kilogram (r = 0.9931). The method exhibited a sensitivity of 6.8 × 10−3 (mg iodate per kg of salt)−1 with a detection limit of 0.61 mg kg−1. The method was applied in actual samples, and the results agreed well with the titration method at a 95% confidence level using a paired t-test. The method supports the green analytical method as evaluated using Green Analytical Procedure Index (GAPI) and Analytical Eco-scale.
abstract_unstemmed	A rapid and straightforward spectrophotometric measurement of iodate in food-grade sodium chloride was developed based on the formation of a purple-red polyvinyl alcohol-iodine complex monitored at 490 nm. The conditions that influence the colorimetric reactions were optimized using a univariate approach. The method exhibited optimum results using 2% polyvinyl alcohol, 10 mM KI, and 0.5 M phosphoric acid. A matrix-matched calibration curve was prepared to eliminate interference due to the presence of NaCl and to provide a direct reading of iodate concentration in salt from the absorbance reading. Under optimum conditions, a linear calibration plot was observed from 5 to 140 mg iodate per kilogram (r = 0.9931). The method exhibited a sensitivity of 6.8 × 10−3 (mg iodate per kg of salt)−1 with a detection limit of 0.61 mg kg−1. The method was applied in actual samples, and the results agreed well with the titration method at a 95% confidence level using a paired t-test. The method supports the green analytical method as evaluated using Green Analytical Procedure Index (GAPI) and Analytical Eco-scale.
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title_short	Microscale assessment of iodate fortificant in food-grade salt using the potassium iodide/polyvinyl alcohol colorimetric reagent
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up_date	2024-07-06T17:37:42.912Z
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fullrecord_marcxml	<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">ELV00783487X</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20240104093035.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">230507s2022 xx \|\|\|\|\|o 00\| \|\|eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1016/j.jfca.2022.104558</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)ELV00783487X</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(ELSEVIER)S0889-1575(22)00176-4</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rda</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">630</subfield><subfield code="a">640</subfield><subfield code="a">540</subfield><subfield code="a">660</subfield><subfield code="q">VZ</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">58.34</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Galiga, Henley F.</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Microscale assessment of iodate fortificant in food-grade salt using the potassium iodide/polyvinyl alcohol colorimetric reagent</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2022</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zzz</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">A rapid and straightforward spectrophotometric measurement of iodate in food-grade sodium chloride was developed based on the formation of a purple-red polyvinyl alcohol-iodine complex monitored at 490 nm. The conditions that influence the colorimetric reactions were optimized using a univariate approach. The method exhibited optimum results using 2% polyvinyl alcohol, 10 mM KI, and 0.5 M phosphoric acid. A matrix-matched calibration curve was prepared to eliminate interference due to the presence of NaCl and to provide a direct reading of iodate concentration in salt from the absorbance reading. Under optimum conditions, a linear calibration plot was observed from 5 to 140 mg iodate per kilogram (r = 0.9931). The method exhibited a sensitivity of 6.8 × 10−3 (mg iodate per kg of salt)−1 with a detection limit of 0.61 mg kg−1. The method was applied in actual samples, and the results agreed well with the titration method at a 95% confidence level using a paired t-test. 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Microscale assessment of iodate fortificant in food-grade salt using the potassium iodide/polyvinyl alcohol colorimetric reagent

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