Markowska A, Kotkowska A, Furmanek W, Gackowska L, Siwek B, Kacprzak-Strzałkowska E, Błońska W
Centralnego Ośrodka Badawczo-Rozwojowego Przemysłu Gastronomicznego i Artykułów Spozywczych-Centralne Laboratorium Jakości.
Rocz Panstw Zakl Hig. 1995;46(4):341-8.
The contents of nitrates and nitrites in selected vegetables reaped in summer and autumn in 1993 were investigated. The samples of vegetables were collected directly from the producers from area of Lódź and from outside of the city. Nitrates were reduced on a cadmium column to nitrites, where-upon they were determined colorimetrically using sulfanilic acid and N-1-Naphthylethylenediamine. It has been found that the contents of nitrates in tested vegetables are mostly higher than the allowable values published in the Ordinance of Minister of Health and Social Welfare from 8th of October 1993. The average contents of nitrates and nitrites in most of tested vegetables were higher in the vegetables from the outskirts of the city than in ones from outside of the city in the province.
对1993年夏秋季节收获的部分蔬菜中的硝酸盐和亚硝酸盐含量进行了调查。蔬菜样本直接从罗兹地区及该市以外地区的生产商处采集。硝酸盐在镉柱上还原为亚硝酸盐，然后使用磺胺酸和N-1-萘基乙二胺进行比色测定。结果发现，被测蔬菜中的硝酸盐含量大多高于1993年10月8日卫生和社会福利部长令中公布的允许值。在该省，大多数被测蔬菜中硝酸盐和亚硝酸盐的平均含量，市郊的蔬菜高于市外的蔬菜。
