RU98100031A - METHOD FOR DETERMINING ZINC IN WATER - Google Patents

METHOD FOR DETERMINING ZINC IN WATER

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Publication number
RU98100031A
RU98100031A RU98100031/04A RU98100031A RU98100031A RU 98100031 A RU98100031 A RU 98100031A RU 98100031/04 A RU98100031/04 A RU 98100031/04A RU 98100031 A RU98100031 A RU 98100031A RU 98100031 A RU98100031 A RU 98100031A
Authority
RU
Russia
Prior art keywords
solution
zinc
water
aqueous layer
determining
Prior art date
Application number
RU98100031/04A
Other languages
Russian (ru)
Other versions
RU2125724C1 (en
Inventor
Т.И. Ахметова
Original Assignee
Акционерное общество "Нижнекамскнефтехим"
Filing date
Publication date
Application filed by Акционерное общество "Нижнекамскнефтехим" filed Critical Акционерное общество "Нижнекамскнефтехим"
Priority to RU98100031A priority Critical patent/RU2125724C1/en
Priority claimed from RU98100031A external-priority patent/RU2125724C1/en
Application granted granted Critical
Publication of RU2125724C1 publication Critical patent/RU2125724C1/en
Publication of RU98100031A publication Critical patent/RU98100031A/en

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Claims (1)

Способ определения цинка в воде, включающий последовательную обработку исследуемой пробы воды тиосульфатом, раствором дитизона в четыреххлористом углероде при pH 4,5 - 4,8, отделение органического слоя, содержащего дитизонат цинка, последующее переведение ионов цинка в водный раствор соляной кислоты и определение цинка в водном слое, отличающийся тем, что для обработки органического слоя, содержащего дитизонат цинка, используют раствор соляной кислоты с концентрацией 0,20-0,25 моль/дм3, взятым в объемном соотношении 1,0-0,8:1, водный слой отделяют и нейтрализуют раствором аммиака до pH 3-4, приливают аммиачно-буферный раствор с pH 4,0 ± 0,2 и алифатический спирт С1-4 или ацетон в количестве, соответствующем 1,0-0,8 объема водного слоя, и титруют ионы цинка трилоном Б в присутствии спиртового раствора дитизона в качестве индикатора.A method for determining zinc in water, comprising sequentially treating the water sample under study with thiosulfate, a solution of dithizone in carbon tetrachloride at pH 4.5-4.8, separating the organic layer containing zinc dithizonate, subsequent conversion of zinc ions into an aqueous solution of hydrochloric acid and determining zinc in aqueous layer, characterized in that for the treatment of the organic layer containing zinc dithizonate, use a solution of hydrochloric acid with a concentration of 0.20-0.25 mol / dm 3 taken in a volume ratio of 1.0-0.8: 1, the aqueous layer separate and neutralized with ammonia solution to pH 3-4, poured ammonia buffer solution with a pH of 4.0 ± 0.2 and aliphatic alcohol C 1-4 or acetone in an amount corresponding to 1.0-0.8 volume of the aqueous layer, and titrated zinc ions trilon B in the presence of an alcoholic solution of dithizone as an indicator.
RU98100031A 1998-01-05 1998-01-05 Method of determining zinc in water RU2125724C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU98100031A RU2125724C1 (en) 1998-01-05 1998-01-05 Method of determining zinc in water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU98100031A RU2125724C1 (en) 1998-01-05 1998-01-05 Method of determining zinc in water

Publications (2)

Publication Number Publication Date
RU2125724C1 RU2125724C1 (en) 1999-01-27
RU98100031A true RU98100031A (en) 1999-04-27

Family

ID=20200967

Family Applications (1)

Application Number Title Priority Date Filing Date
RU98100031A RU2125724C1 (en) 1998-01-05 1998-01-05 Method of determining zinc in water

Country Status (1)

Country Link
RU (1) RU2125724C1 (en)

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