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Sequential Spectrophotometric Determination of Microgram Amounts of Nitrate and Nitrite in Mixtures

✍ Scribed by Fang Guozhen; Xie Qing; Fang Mei

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
49 KB
Volume
60
Category
Article
ISSN
0026-265X

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✦ Synopsis

This paper describes three new methods: the first may be used for the determination of nitrite; the second is applicable to determination of nitrate; and the third permits sequential determination of both nitrite and nitrate in mixtures with no prior separation. For the determination of nitrite and nitrate in synthetic mixtures containing 1:5 to 5:1 ratios of the ions, in tap water, and in river water, mean recoveries (for 3 to 22 g of added NO 3 Οͺ and NO 2 Οͺ ) are 96.1 and 98.1% (n Ο­ 15) and coefficients of variation are 2.2 and 2.5% for NO 3 Οͺ and NO 2 Οͺ (n Ο­ 5), respectively.

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