In order to solve the problems encountered in determination of Fe,Mn,Ni,Cu and Zn by FAAS method,the effect of the concentration of nitric acid and the integrated time on determination results was studied in this paper.
针对火焰原子吸收法测定铁、锰、镍、铜和锌时遇到的问题,考察了溶液中硝酸浓度及积分时间对测定结果的影响,发现保持标准系列与被测样品中的硝酸浓度一致有利于提高分析结果的准确性;采用5 s的积分时间可提高测定铁和镍的准确度和精密度。
By controlling the nitrate concentration in the anoxic stage,the methods and effects of inducing Denitrifying Phosphate Accumulating Organisms(DNPAOs) were studied.
通过控制缺氧段硝酸盐浓度,研究了反硝化聚磷菌的诱导方法及效果。
reticulata under different KNO_3 concentrations were studied.
研究了不同硝酸钾浓度对蔷薇藻生长代谢的影响,分析测定蔷薇藻比生长速率、胞外多糖产量、藻蓝蛋白含量、色素含量、硝酸还原酶活性和SOD活性等参数。
increased concentration of nitrates in water
水中硝酸盐浓度的增加
Determination of Serum Nitrate Concentration by Nitrate Reductase One Step Method
硝酸盐还原酶一步法测定血清中硝酸盐浓度
Dynamic analysis of factors influencing the concentration of nitrite and flavor development in Cantonese sausage
广式腊肠中影响亚硝酸盐浓度及风味物质形成因素的动态分析
Responses of the Red Algae Gracilaria Lemaneiformis to Changes of Solar Radiation and Nitrate Concentration;
红藻龙须菜对阳光辐射及硝酸盐浓度变化的响应
nitrate and chloride concentrations
硝酸盐和氯化物浓度
Effects of Different Nitrogen Concentration and Form on Nitrate in Radish Leaf;
氮素浓度及形态对叶用萝卜硝酸盐含量的影响
Nitracidium and hydronitracidium nitrastes are present in concentrated nitric acid.
浓硝酸中有硝酸合氢和氢合硝酸合氢的硝酸盐存在。
Measurement of Low Concentrations of Nitrate and Nitrite Using Chemiluminescent Technique and Its Application
化学发光法测定海水中低浓度硝酸盐和亚硝酸盐含量的方法探究及应用
Study on Treatment of Nitrate-nitrogen Wastewater by Advanced Internal Electrolysis and a New Treatment of Nitrate-nitrogen Process;
强化微电解法处理高浓度硝酸盐氮废水新工艺的研究
Catalytic Reduction of High-concentration Nitrate Nitrogen by Three Combined Electrodes
三种不同组合电极催化还原高浓度硝酸盐氮的研究
Effects of Different Concentration of (NO_3)~- on the ChlorophyⅡ Fluorescence Sweet Cherry under Waterlogging
不同浓度的硝酸盐对淹水条件下甜樱桃叶绿素荧光的影响
Determination of Nitrate in Rock Salt by Ultraviolet Spectrophotometry
紫外分光光度法测定岩盐中的硝酸盐
A small amount of aminoacid and other typology amine, except nitrides and azi-des, will not interfere with the reaction when their concentrations are low.
除亚硝酸盐和叠氮化合物外,其它胺类和氨基酸在较低浓度时不干扰此反应。
nitrate and sulphate reduction
硝酸盐与硫酸盐还原
nitrate and iodate minerals
硝酸盐和碘酸盐矿物
Evaluation of Uncertainty in Measurement on the Content of Nitrite in Foods
食品中亚硝酸盐含量的不确定度评定
Evaluation of Uncertainty in Measurement for the Determination of Nitrite in Foods
食品中亚硝酸盐测量不确定度的评定
Nitrazepam Hydrochloride
盐酸硝西泮(硝基安定)