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detecting concentration
相关语句
  检测浓度
    Results showed that the minimum detecting concentration of sulphur compounds was up to mg/m~3 level. With the column temperature in 70℃, injector temperature in 180℃, detector temperature in 150℃, and N_2 flow rate at 50mL/min, the recovery of carbon disulfide was 98.66%, and relative standing deviation was 2.12%, while the recovery of dimethyl sulphide was 98.66%, and relative standing deviation was 1.56%.
    结果表明:该分析对含硫气体的最小检测浓度在mg/m3级,在柱温为70℃,检测器温度为180℃,气化室温度为150℃,氮气流速为50mL/min时,CS2的回收率为98.66%,变异系数为2.12%; 甲硫醚的回收率为98.66%,变异系数为1.56%。
短句来源
    The result showed that the minimum detecting concentration of sulfur compounds was up to ppb level.
    结果表明:该分析对含硫气体的最小检测浓度达到ppb级。
短句来源
  检出浓度
    The result showed that the relative standard deviation of the method was less than 10%, limit of sampling volume should be 60 litres and the minimum detecting concentration was 0.001 mg/m~3.
    方法的相对标准偏差小于10%,取样鞋为60升时,最低检出浓度为0.001mg/m~3。
短句来源
    calculating the detection limit of 4.8×10-11g, input volume of sample was 2μl/h, minium detecting concentration was 0.024mg/l, linear range was 0.04-2.0mg/l, recovery rate was 97.5>%-99.0%, the other isomers of the same series did not interfere.
    以3倍的仪器噪声计算其检出限为4.8×10~(-11)g,进样量为2μL时,最低检出浓度为0.024mg/L,线性范围为0.04~2.0mg/L; 精密度实验的变异系数为0.4%~1.7%;
短句来源
    The recovery rate of this method was 98.1%-100.88%, minimum detecting concentration was 1.7×10-4mg/m3, linear scope was 0.1-340ng, and relative standard deviation was 1.23%.
    方法回收率为98.1%~100.8%,最低检出浓度为1.7×10~(-4)mg/m~3,线性范围为0.1~340ng,相对标准偏差为1.23%。
短句来源
  “detecting concentration”译为未确定词的双语例句
    Multiple Linear Regression of pH Titration and Detecting Concentration of Heavy Metal Simultaneously from Leachate
    多元线性回归pH滴定同时测定垃圾渗滤液中重金属浓度
短句来源
    The lowest detecting concentration was 0 001 mg·kg -1 .The average recoveries were 75 6%—106 0% with 2 5%—11 5% coefficients of variation.
    在浓度为002—20mg·kg-1时,平均回收率为756%—1060%; 变异系数为25%—115%.
短句来源
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  detecting concentration
Assessing the compatibility of many trace elements by conventional methods that rely on detecting concentration changes is extremely difficult.
      
Therefore, 23Na-MRI has the potential to non-invasively differentiate viable from non-viable tissue by detecting concentration changes of intra- and extracellular sodium.
      


Chronocoulometry for flowing soultion overcomes noise disturbance resulting from capacity current and variety of property of electrode surface.completing one determination within 10 seconds, having the advantage of rapidity, sensitivity, accuracy and good repeatability. So for such instrument had not been seen commercially. On the basis of dissolved oxygen analyzer. We develop into versatile instrument and have it microcomputer based. Carrying out mathematic and physic statistics disposition,reality,repeatability...

Chronocoulometry for flowing soultion overcomes noise disturbance resulting from capacity current and variety of property of electrode surface.completing one determination within 10 seconds, having the advantage of rapidity, sensitivity, accuracy and good repeatability. So for such instrument had not been seen commercially. On the basis of dissolved oxygen analyzer. We develop into versatile instrument and have it microcomputer based. Carrying out mathematic and physic statistics disposition,reality,repeatability and sensitivity of instrument acquire further enhancement. The analyzer may detect concentration of 0.01 mg/1, corresponding deviation is?0.5- 1.0% .applying to determination of Crs+Cu2f,O2 and Br- in water, acquiring good effect.

流动时库仑分析法克服了电容电流及电极表面性质改变等噪声干扰。10 s内完成一次测定点。在“海水中溶解氧测定仪”的基础上,改为通用型仪器,使之微机化,进行数理统计处理,仪器的可靠性、再现性及灵敏度得到进一步提高,可测0.01 mg/l浓度,相应偏差±0.5~1.0%,进行了水中 Cr~(6+)、Cu~(2+)、O_2、Br~- 等测定,获得良好效果。

Used diluted sulfuric acid as absorbent and ampere detector for determining Trace hydrazine in air with ion chromatography. Selection of optimal test conditions including concentration and flow of eluant, acidity of absorbent, potential of detector and interference elements etc. were made. The result showed that the relative standard deviation of the method was less than 10%, limit of sampling volume should be 60 litres and the minimum detecting concentration was 0.001 mg/m~3.

以稀硫酸为吸收液,铂工作电极为安培检测器,用离子色谱法测定空气中的微量肼。经试验,选择了较适宜的淋洗液浓度、流量,吸收液的酸度,安培检测器的最佳施加电位及抗干扰实验。方法的相对标准偏差小于10%,取样鞋为60升时,最低检出浓度为0.001mg/m~3。

Determination of 4-nitro-2, 6-Dichloroaniline in dye waste-water by gas chromatographic method has been done, including extraction of water samples, GC separating conditions and quantitative method, and determining its accuracy and precision; calculating the detection limit of 4.8×10-11g, input volume of sample was 2μl/h, minium detecting concentration was 0.024mg/l, linear range was 0.04-2.0mg/l, recovery rate was 97.5>%-99.0%, the other isomers of the same series did not interfere.

采用气相色谱法测定工业废水中的4-硝基-2,6-二氯苯胺。研究了样品的提取、色谱分析条件及定量方法。测定了方法的精密度和准确度。以3倍的仪器噪声计算其检出限为4.8×10~(-11)g,进样量为2μL时,最低检出浓度为0.024mg/L,线性范围为0.04~2.0mg/L;精密度实验的变异系数为0.4%~1.7%;加标回收率为97.5%~99.0%。苯胺,对硝基苯胺,邻硝基苯胺,邻氯对硝基苯胺均不干扰测定。

 
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