This method is applied to determination of nitrate and nitrite in synthetic water samples and surrounding water samples satisfactory results are obtained 并测定了合成水样及环境水样中硝酸根和亚硝酸根含量，结果满意。
Industrial circulating cooling water and boiler waterdetermination of fluorine choride phosphate nitrite nitrate and sulfate - ion chromatography 工业循环冷却水及锅炉水中氟氯磷酸根亚硝酸根硝酸根和硫酸根的测定离子色谱法
Results indicated that surfactant and no3 ( superscript - ) ions increased tebufenozide hydrolysis , while humic acid caused a degree of inhibition 结果表明：表面活性剂和硝酸根离子可以促进虫酰肼的水解，而腐殖酸则对其水解有一定抑制作用。
A series of transfer experiments are carried out to study the effects of flavonoid on lr development at the most suitable nitrate concentration ( 0 . 2 mm ) 我们在最适合侧根发生的硝酸根浓度( 0 . 2mm )条件下，通过转移实验来研究类黄酮对于侧根发生的影响。
Nitrate regulates lr development . on one hand , nitrate is necessarily for lr development , on the other hand , high level of nitrate inhibites lr growth 硝酸根是影响侧根发生的重要因素，一方面，硝酸根对于侧根发生必不可少，而硝酸根浓度过高则又抑制了侧根的发生。
Research was conducted on the effect on tebufenozide hydrolysis in bodies of water of substances such as surfactants , humic acid , and no3 ( superscript - ) ions that coexist with tebufenozide in water 研究了虫酰肼降解水体中的共存物，如表面活性剂、腐殖酸和硝酸根离子等对虫酰肼水解的影响。
This paper reviews the development of catalytic nitrate reduction in drinking water , focusing on the photocatalytic and heterogeneous catalytic process , and discussion about the trend of catalytic denitrification in the future 本文综述了催化还原脱除水中硝酸根的研究进展和现状，并对其发展趋势进行了简单的论述。
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。
When the concentration is low ( < 50 mm ) , nitrate only influences lr development , and has no effect on primary root . but at higher concentration , nitrate obviously inhibits primary root elongation 在浓度相对较低的条件下( 50mm )硝酸根只影响侧根生长，而对主根没有明显影响；随着浓度的提高，硝酸根对主根的延伸也起到了明显的抑制作用。
Sulfur dioxide , emitted by the industrial production and domestic burning fuel , and nitrogen oxides , emitted by the car exhausts and burning petrol are absorbed by the rain , forming larger raindrops , and falling on the ground . this is called acid rain . the main fuel in china is coal , which emits mainly sulfur dioxide , so the acid rain in china is sulfuric acid type of acid rain 工业生产民用生活燃烧煤炭排放出来的二氧化硫，燃烧石油以及汽车尾气排放出来的氮氧化物，经过云内成雨过程，即水气凝结在硫酸根硝酸根等凝结核上，发生液相氧化反应，形成硫酸雨滴在下降过程中不断合并吸附冲刷其它含酸雨滴和含酸气体，形成较大雨滴，最后降落在地面上，形成了酸雨。
