Biologic reduce of nitrate and nitrite in waterThomas Sohlberg
Nitrate and Nitrite in Drinking Water 作者:Subcommittee on Nitrate and Nitrite in D; Committee on Toxicology; National Research Council 出版年:1995-1 页数:78 定价:$ 34.75 ISBN:9780309083706 豆瓣评分 目前无人评价
Nitrate exposure in water (59 studies) was more commonly investigated than nitrite exposure (4 studies). Colorectal (15 studies) and gastric (13 studies) cancers were the most reported. In meta-analyses (4 studies) we identified a positive association of nitrate exposure with gastric cancer, OR...
Nitrite and nitrate, collectively termed (NOx), are converted to nitrogen gas and removed from wastewater by a biological reaction known as denitrification. This process requires very low dissolved oxygen (DO) anda sufficient supply of organic carbon, so nitrate and COD/BOD/DOC monitoring are criti...
An improved rapid method of extraction-photometric determination of trace amounts of nitrate and nitrite in water has been developed. In this method, nitrate is quickly reduced to nitrite at pH 3.0 in 5 min with freshly prepared cadmium sponge, which is produced in situ by action of zinc ...
E.g., in the existence of intense heat or a high acidic environment, sodium nitrite can change into nitrosamine, a carcinogen. It has the potential to cause stomach cancer.3. What is the allowable nitrate level in drinking water?The permissible limit is the range of a substance's toxicity...
Determination of nitrate and nitrite in water using high-performance liquid chromatography 喜欢 0 阅读量: 28 作者: HK Sui,KA Buckle,M Wootton 展开 摘要: The equipment used was manufactured by Waters Assoc.(Milford, MA, USA) and consisted of a Model 201 liquid chromatograph equipped with...
网络释义 1. 硝酸盐和亚硝酸盐 批发采购分析试剂... ... 钠 sodium ≤0.01%硝酸盐和亚硝酸盐nitrate and nitrite≤0.005% 氯化物 Chloride,% ≤0.0005 0.002 ... detail.china.alibaba.com|基于8个网页 2. 亚硝酸盐氮 ... ) Melamine 三聚氰胺 )Nitrate and Nitrite硝酸盐氮,亚硝酸盐氮) Sulphur dioxid...
Nitrate is far less toxic thannitriteand much less toxic thanAmmonia. The level of Nitrate in water that may damages aquatic animals varies considerably in each species and at their stage of growth. With mortality of eggs and very young fry being sensitive to low levels (~20 mg/l) of nit...
Effect of nitrate and nitrite in drinking water on rats 2-month-old male rats were given drinking water that contained either none, 4000 ppm sodium nitrate or 2000 ppm sodium nitrite for 14 months. During the tr... CK Chow,CJ Chen,C Gairola - 《Toxicology Letters》 被引量: 26发表: 198...