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- Besides the removal ratios of nitrate and nitrite in column A were higher than column B. 另外柱A对硝酸盐氮和亚硝酸盐氮的去除效果也优于柱B。
- Objectives We research the change contents nitrate and nitrite of cabbage in different storage ways. 不同贮藏方式对小白菜中硝酸盐、亚硝酸盐的含量变化会产生影响。
- The heavy metal,nitrate and nitrite do not exceed national standard.The nutritional components of Caragana chin... 重金属、硝酸盐、亚硝酸盐含量均未超过国家标准.;因此;金雀花营养成分种类齐全;含量丰富;具有较高的营养价值
- Detection of nitrate and nitrite in cooked meat with reversed high performance liquid phase chromatography. 反相高效液相色谱;卤肉制品;硝酸盐;亚硝酸盐
- Nitrosamines also can be synthesized from widely existed nitrate and nitrite in nature when they are taken into human body. 亚硝胺类化合物的致癌作用主要是通过其生成氨氮化合物而间接体现的。
- It is well known that the nitrate and nitrite from environment is causally related to infant methemoglobinemia and esophageal cancer. 环境中的硝酸盐暴露与婴儿高铁血红蛋白血症及食管癌的病因关联已为人们熟悉。
- Third, this research discoveries in the fresh vegetables in the depositing process, nitrate and nitrite content increase with the storing temperature. 再次,本研究发现新鲜蔬菜在存放的过程中,硝酸盐和亚硝酸盐的含量随着贮存温度的升高而增大;
- Ma L S, Qian M R.Study on the water pollution with nitrate and nitrite in Taihu drainage basin[J].Chinese J. of Environ.Sci., 1987, 8(2) :60-65. [8]马立珊;钱敏仁.;太湖流域水环境硝态氮和亚硝态氮污染的研究[J]
- Most of nitrate and nitrite that the human body absorb mostly come from the daily edible vegetables.,specially leaf vegetables. 人体吸收的硝酸盐和亚硝酸盐大多来自于蔬菜,特别是叶类蔬菜。
- DCD does not show notable effect on growth of spinach but results in a substantial reduction in nitrate and nitrite contents, and a significant increase in Vc content in spinach. 说明在施用氮肥时配施氮用量的 10%25双氰胺,对降低蔬菜硝酸盐含量及提高品质是有效的。 尽管增施钾肥能明显促进蔬菜的生长、降低蔬莱硝酸盐、亚硝酸盐含量、提高蔬菜Vc含量,但对双氰胺的效果没有影N6)。
- Zhou G D, Lu S L.The nitrate and nitrite content in the main vegetables and artifactitious ones in Shanghai[J].Environmental Pollution and Control, 1989, 11 (6) : 31 - 32. [6]周根娣;卢善玲.;上海市主要蔬菜中硝酸盐含量及加工处理后硝酸盐和亚硝酸盐含量[J]
- This paper introduces the development in how to determinations of nitrate and nitrite by comparison with the current methods, it points out the limitation of those methods and presents a new way to monitor NOx and SO2 in the air with HPLC. 本文介绍了近几年硝酸根、硝酸根、硫酸根等离子的测定方法的进展,并通过对现有方法的比较,指出了目前这些方法的局限性,提出了利用高效液相色谱仪监测大气中氮氧化物和二氧化硫的新思路。
- A method called "K-Ratio H-Point Standard Addition Method" was proposed for the simultaneous determination of nitrate and nitrite, based on their ultraviolet absorption spectrum in a neutral medium. 摘要研究了在近中性介质中,硝酸根与亚硝酸根的紫外吸收光谱,提出了引用“K比例H点标准加入法”同时测定了硝酸根、亚硝酸根含量的方法。
- Methods:Cadmium column and acid-base resisting burette with knob-operated control were used to determine nitrate and nitrite in milk product.The method of national standard was improved. 方法:采用进口镉粒,用耐酸碱的活塞旋钮滴定管替代镉柱玻璃管,对国家标准方法镉柱法进行改进后,测定奶制品中硝酸盐和亚硝酸盐,结果:测定结果与国标测定方法一致。
- Nitrate and nitrite change rule has had the obvious change in the vegetables juice.The nitrate content is reduces gradually, but the nitrite content is increases gradually in the storing process. 新鲜蔬菜榨汁后,贮存时硝酸盐和亚硝酸盐的含量变化规律发生了明显差异,硝酸盐的含量是逐渐减小,而亚硝酸盐的含量是逐渐增大的,且这种增大的趋势非常大;
- The operation of GB-method is complicated in detecting nitrate and nitrite,needing professional operator,reagents used in determination were easily to lose efficacy and harmful to operator health. 国标方法检测硝酸盐、亚硝酸盐操作繁琐,需要专业技术人员操作,试剂易失效且会对操作者的健康造成伤害。
- Shen M Z, Zhai B J, Dong H R.Studies on nitrate accumulation in vegetable crops I .Evaluations of nitrate and nitrite in different vegetables[J].Acta Hort.Sin., 1982, 9 (4) : 41-48. [4]沈明珠;翟宝杰;东惠茹.;蔬菜硝酸盐累积的研究I
- Content of nitrate and nitrite in several fruits 几种果品中硝酸盐和亚硝酸盐的含量
- A highly explosive mixture of ammonium nitrate and trinitrotoluene. 阿马托炸药一种由硝酸铵和三硝基甲苯组成的烈性混合炸药
- Mild powder--Determination of nitrate and nitrite contents(Cadmium reduction and photometry method) GB/T5413.;32-1997乳粉硝酸盐和亚硝酸盐的测定