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selenate
相关语句
  硒酸盐
     In the natural environment, four principal inorganic species exist: selenide (-2), element(0), selenite (+4), and selenate (+6).
     硒呈四种主要的无机形态存在于自然界中 :硒化物 ( -2价 )、元素硒 ( 0价 )、亚硒酸盐 ( +4价 )和硒酸盐 ( +6价 )。
短句来源
     Microbial Transformation of Selenate by Atomic Fluorescence Spectrophotometry
     用原子荧光法研究硒酸盐的微生物转化过程
短句来源
     The impact on microbial transformation of selenate by nitrate
     硝酸根对硒酸盐微生物转化的影响
短句来源
     The Correlation between Selenate Reduction and Nitrate Deultrification in Soil
     土壤中硒酸盐还原作用与硝酸盐脱氮化作用的相关关系
短句来源
     LC50 24h: Copper > Arsenite >Selenite > Mercury > Cadmium >Selenate >Zinc> Manganese > Nickel LC50 48h: Arsenite > Copper > Mercury > Selenite > Cadmium > Selenate > Zinc > Manganese > Nickel The Brine shrimp has gained popularity as test organism for short-term toxicity testing.
     48小时LC50值,砷>铜 >汞>亚硒酸盐>镉>硒酸盐>锌>锰>镍.卤虫已被普遍用来作为测试机体短时毒力的试验材料。
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  硒酸根
     Study on Determination of Selenate and Selenite by Single-Column Ion Chromatography
     单柱离子色谱法测定硒酸根和亚硒酸根的研究
短句来源
     Separation of Arsenate and Selenate with Capillary Zone Electrophoresis
     砷酸根和硒酸根的毛细管电泳分离
短句来源
     STUDY ON DETERMINATION OF SELENATE RADICAL BY ION CHROMATOGRAPHY
     离子色谱法测定硒酸根离子的方法研究
短句来源
     Ele-ment selenium was the major product. The efficiency of selenite and selenate by microbiology were 95 % and 91. 7 %, respectively.
     经微生物作用后,亚硒酸根硒酸根的转化率分别为95%和91.7%,因此认为该法能用于水体中硒的去除。
短句来源
     The number of microbe was less influnced in added nitrate medium, so we conlude that nitrate has impetence with selenium on microbial transformation and inhibited selenate transformation.
     硝酸根的存在不影响微生物的数目,说明硝酸根与硒酸根发生竞争转化,抑制了单质硒的生成。
短句来源
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  “selenate”译为未确定词的双语例句
     Study of Kinetic Reaction of Reduction of Selenate to Selenite
     硒酸离子还原成亚硒酸的反应动力学研究
短句来源
     It was found that there is a positive correlation between the pH of soil and the soluble selenate and a negative correlation between the humus and the soluble selenate(r= -0.180,n=131,p<0.040).
     试验发现,土壤pH与水溶性硒含量是正相关,土壤腐殖质则与水溶性硒呈负相关(r=0.180,n=131,p<0.040)。
短句来源
     The detection limit for selenate radical is 1.05 μg/ml. The relative standard deviation is 2.96%. The calibration curve is liner in the range of 1.05~100 μg/ml.
     SeO_4~(2-)的检出限1.05μg/ml,相对标准偏差2.96%,线性范围1.05—100μg/ml,应用于加入SeO_4~(2-)的水样分析取得良好结果。
短句来源
     Cell growth and selenium uptake were monitored. Selenate (>0.5ppm Se) or selenite (> 0. 6ppm Se) inhibited C.
     在pH5.5培养介质中,当Se(Ⅵ)>0.5ppm或Se(Ⅳ)>0.6ppm时,将抑制C.
短句来源
     The critical redox potential of selenate and selenite transforming into each other varies from 216.6 mV to 74.1 mV.The critical redox potential decreases by 50.1 mV when pH value in soil solution increases by one unit.
     Se(Ⅵ )与Se(Ⅳ )相互转化体系的临界电位范围为 2 16 .6~ 74.1mV ,同时土壤溶液 pH值从 6 .5上升到 7.5 ,临界电位下降 5 0 .1mV ;
短句来源
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  selenate
Combined application of Epin and sodium selenate had virtually no effect on selenium accumulation in the pulp but increased the microelement content in the fruit skin and roots.
      
Synthesis and Crystal Structure of the First Uranyl Selenite(IV)-Selenate(VI) [C5H14N][(UO2)(SeO4)(SeO2OH)]
      
The U(1)O6(H2O) and U(3)O6(H2O) linked through selenate groups form chains running along [
      
Synthesis and crystal structure of a new uranyl selenite(IV)-selenate(VI), [C5H14N]4[(UO2)3(SeO4)4(HSeO3)(H2O)](H2SeO3)(HSeO4)
      
Crystals of a new uranyl selenite(IV)-selenate(VI), [C5H14N]4[(UO2)3(SeO4)4(HSeO3)(H2O)]·(H2SeO3)(HSeO4) were obtained by evaporation from aqueous solutions.
      
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Volumetrically selenium can be determined by precipitating as lead selenate,and then titrate the precipitated lead with EDTA solution. Selenate can be precipitated quantitatively with lead nitrate in slight acidsolution containing 30% ethyl alcohol. It is best precipitated at pH 2--3. If seleniumis present as selenite, it can be oxidized to selenate with excess potassium perman-ganate, the excess of which is removed with hydrogen peroxide. Lead in precipitates is determined by dissolving the...

Volumetrically selenium can be determined by precipitating as lead selenate,and then titrate the precipitated lead with EDTA solution. Selenate can be precipitated quantitatively with lead nitrate in slight acidsolution containing 30% ethyl alcohol. It is best precipitated at pH 2--3. If seleniumis present as selenite, it can be oxidized to selenate with excess potassium perman-ganate, the excess of which is removed with hydrogen peroxide. Lead in precipitates is determined by dissolving the precipitate in alkaline buffersolution containing ascorbic acid and excess standand EDTA solution. The solution isback titrated with standard manganous salt solution with Eriochrome black T asindicator. This proposed method for the determination of selenium is rapid and accurate.Te, Gu, Fe, etc., if present in small amounts, cause no interference,

本文提出使硒成为硒酸铅沉淀,再用EDTA容量法滴定沉淀中的铅以间接测定硒的方法。硒酸铅的沉淀作用最好在pH值为2—3及含30%体积乙醇的水溶液中进行,所得沉淀溶于过量EDTA溶液内,用亚锰盐回滴法测定所含的铅可得精确结果。少量的碲及铜、铁等元素不妨碍测定。

It was observed that the plating efficiency of CFU-GM of C57BL/6j mice effected by three types of CSF, HCS, lithium carbonate and sodium selenate, and tried to use them to reverse the inhibiting effect of IFN on CFU-GM. The results showed as follows: three types of CSF could anagonize partially the inhibiting effect of IFN on CFU-GM.Trace sodium selenate and lithium carbonate could stimulate the proliferation of CFU-GM, and increase 200% of the plating efficiency inhibited by IFN.Trace HCS also could...

It was observed that the plating efficiency of CFU-GM of C57BL/6j mice effected by three types of CSF, HCS, lithium carbonate and sodium selenate, and tried to use them to reverse the inhibiting effect of IFN on CFU-GM. The results showed as follows: three types of CSF could anagonize partially the inhibiting effect of IFN on CFU-GM.Trace sodium selenate and lithium carbonate could stimulate the proliferation of CFU-GM, and increase 200% of the plating efficiency inhibited by IFN.Trace HCS also could antagonize partially the inhibition of IFN to CFU-GM.

本实验用C_(57)BL/6j小鼠CFU-GM集落形成的方法观察了三种CSF和氢化可的松、锂盐及硒盐对CFU-GM的影响及其对IFN的CFU-GM抑制作用的阻断作用。结果表明,三种CSF能部分拮抗IFN的CFU-GM抑制效应;微量的硒酸钠,碳酸锂均可刺激CFU-GM增殖,并使IFN200IU抑制的CFU-GM产率提高200%以上;微量的氢化可的松也能部分阻断IFN的CFU-GM抑制。

A method for determination of seleninm in foods by hydride generation -atomic absorption spectrometry was described. Food samples were digested by heating with a mixture of nitric, perchloric, and sulfuric acids. After addition of 4ml of 6mol/L HC1, the digests were heated in a boiling water bath to reduce selenate to selenite. The hydride of selenium was evolved by reduction with 1% KBH4 from a system of 2mol/L HC1-1% K3Fe(CN)6 and then atomized in a laboratory-constructed electrically heated silica absorption...

A method for determination of seleninm in foods by hydride generation -atomic absorption spectrometry was described. Food samples were digested by heating with a mixture of nitric, perchloric, and sulfuric acids. After addition of 4ml of 6mol/L HC1, the digests were heated in a boiling water bath to reduce selenate to selenite. The hydride of selenium was evolved by reduction with 1% KBH4 from a system of 2mol/L HC1-1% K3Fe(CN)6 and then atomized in a laboratory-constructed electrically heated silica absorption tube. Absolute detection limit of the method was 2ng and the linear range was from 0 to 10 ng/mlSe. Recoveries of inorganic selenium added to a variety of foods ranged from 83% to 112%. Accuracies checked with standard materials of pig liver and brassica oleraca were within the certified values. The loss and pollution of selenium during the sample pretreatment were also studied.

本文介绍了一种用氢化物发生原子吸收法测定食物中硒的方法。本方法的最小检出量为2ng,重复测定的变异系数小于10%,加入到食物样品中无机硒的回收率为83%~112%。用本方法分析猪肝和甘蓝两种标准物质中的硒,测定值和标准值吻合。应用数理统计方法研究了样品前处理过程中被测成分硒的损失与污染。

 
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