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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 18, Number 6
JKCSEZ 18(6)
December 20, 1974 

Spectrophotometric Determination of Nitrate with Brucine

Brucine에 의한 질산이온의 흡광광도정량법
Bo Shik Han

특별한 장치나 복잡한 조작없이 간단하고 신속한 brucine 법에 의한 질산이온의 흡광광도 정량법을 정하였다. 검액을 brucine 시액과 30N 황산으로 60℃에서 30분간 반응시키면 안정하고 재현성이 좋은 발색을 얻을 수 있으며, 410nm에서 질산성질소의 농도가 0.07ppm부터 0.6ppm까지 흡광도와 직선적 관계가 있다. 또 반응 계에서 흡광도의 수는 단 하나임을 확인하였다. 방해이온들중 아질산이온은 메탄올로서 제거할 수 있다.

A simple and rapid spectrophotometric method has been found for the determination of nitrate content in natural water according to brucine method by means of neither particular apparatus nor troublesome procedures. Brucine reacted with nitrate in the presence of 30 N sulfuric acid to develop stable color with good reproducibility after 30 minutes reaction at 60℃. An essentially linear relationship to the nitrate concentration was observed in the range of 0.07~0.6 ppm at 410 nm, and it was established that the number of absorbing species in the reaction system was only one between 400 and 490 nm. Among the interferences, nitrite could be removed by the addition of methanol.

415 - 420
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