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determination of cu
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  测定铜
    Direct Determination of Cu, Pb and Zn in Wastewater by Atomic Absorption Process
    原子吸收直接测定铜选厂废水中的铜铅锌
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  “determination of cu”译为未确定词的双语例句
    THE SIMULTANEOUS DETERMINATION OF Cu, Pb, Cd, AND Cr IN WATER BY DERIVATIVE POLAROGRAPHIC WAVE
    水中铜铅镉铬导数极谱波的同时测定
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    Determination of Cu, Pb, Cd by flame AAS with on-line Concentration to Atomizer
    在线富集进样-火焰原子吸收法测定水中低含量Cu、Pb、Cd
短句来源
    GFAAS Determination of Cu, Pb, Cd and Cr in Zhulong River
    石墨炉原子吸收连续测定猪龙河水中Cu、Pb、Cd、Cr
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    Fluorescent quenching method for determination of Cu(Ⅱ) in environmental water using human serum albumin
    人血清白蛋白荧光猝灭法测定水环境中Cu(Ⅱ)
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    Simultaneous Determination of Cu~(2+)、Pb~(2+)、Hg~(2+) and Cd~(2+) by PCR-Spectrophotometry
    主成分回归法同时测定Cu~(2+)、Pb~(2+)、Hg~(2+)和Cd~(2+)
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  determination of cu
The effects of Na, Cl, Ca, Fe, Zn, and Pb, whose concentrations in hairs vary within a wide concentration range, on the results of the determination of Cu, Cd, K, Fe, Zn, and Pb were examined.
      
Test Determination of Cu(II), Ni(II), and Cr(VI) in a Single Sample
      
A mercury-free modified screen-printed electrode was proposed for the preconcentration and determination of Cu(II), Pb(II), Cd(II), and Zn(II).
      
Procedures were developed for the determination of Cu(II) by its activating effect in the concentration range 0.05-4.0 mM and of oxalate ions by their inhibiting effect in the concentration range 0.5-20 mM.
      
The competition coordination between Cu and the Al-PCA complex was applied to the selective determination of Cu (CCSD) by the spectral correction technique.
      
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In order to improve the analytical quality of the background values in soils and crops, an intercomparison test among 23 laboratories has been organized. Precision and accuracy from results of this test showed that it pays for the effort in laboratories in the determination of Cu, Zn, Cd, Pb and Ni in soils. Content of the above elements in six soil samples was determined. It is suggested that analytical quality control technique should be used in soil background survey.

为了提高农业土壤、作物背景调查分析的质量,农业部环境监测研究所分别组织了土壤参考样品的比较测试。本工作是1980—1981年间对23个背景值调查参加单位的铜、锌、铅、镉和镍测定的准确度和精密度作了观察,估计了参考土壤的含量。结果表明准确度问题更应引起注意。建议在土壤背景值调查中试用分析质量控制。

This article presents a discussion on four pretreat-ment methods of analysing metal elements in air particu-late samples. In determination of Cu, Ph, Cd, Cr, Be, Co and Ni, the four methods that are sulfate-ash method, acid mixture digestion, high pressure wet digestion and Soxhlet's extraction have beeen compared. The results demonstrate that the method of high pressure wet disges-tion with low blank is easy to handle and has a desirable precision (CV% 2.3-7.1%) and high recovery (91 -117%).

本文对测定大气颗粒物中金属元素样品的前处理方法:硫酸-灰化法,常压混酸消解法,高压消解法,索氏提取法进行了探讨。测定了Cu,Pb,Cd,Cr,Be,Co,Ni元素,对各方法的空白值,精密度、准确度,以及样品测定等进行了对比与评价。

A simple and rapid method for the determination of Cu, Pb, Zn, Cd, Co, Ni, Mn, Cr, Fe and Al in the total ,weakly and strongly bound fraction of suspended matter by GFAAS is described. The weakly bound fraction was leached with 0.5mol/L[HCI] ,and the residual or total sample was decomposed in a teflon bomb with HF/aqua regia. The sum of the weakly and strongly bound fraction equals to the total concentration of metals. The precisions are better than±5% for Fe and Al,and ±9% for the other metals. The accuracy...

A simple and rapid method for the determination of Cu, Pb, Zn, Cd, Co, Ni, Mn, Cr, Fe and Al in the total ,weakly and strongly bound fraction of suspended matter by GFAAS is described. The weakly bound fraction was leached with 0.5mol/L[HCI] ,and the residual or total sample was decomposed in a teflon bomb with HF/aqua regia. The sum of the weakly and strongly bound fraction equals to the total concentration of metals. The precisions are better than±5% for Fe and Al,and ±9% for the other metals. The accuracy of the analyses is good from the use of reference materials of Canada estuarine sediments MESS-1 and BCSS-1。

本文介绍了用0.5mol/L[HCl]浸取海洋悬浮物,并在全聚四氟乙烯密闭消化罐中,于98±2℃下用王水+HF消解悬浮物样品,以石墨炉原子吸收分光光度法连续测定其Cu,Pb,Zn,Cd,Co,Ni,Mn,Cr,Fe和Al等10种金属元素的弱结合、强结合颗拉态及总含量的方法。对浸取所用酸的酸度、体积和浸取时间以及消解溶剂、温度和时间等进行了比较和选择。

 
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