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determination of cu
相关语句
  测定铜
    SEPARATION AND DETERMINATION OF Cu(Ⅱ)AND Zn(Ⅱ)WITH meso- TETRA (4-TRIMETHYLAMMONIUM PHENYL)-PORPHINE AS PRE-COLUMN DERIVED REAGENT BY HLPCC
    高效液相色谱meso-四(4-三甲铰基苯基)-卟啉柱前衍生法分离测定铜(Ⅱ)和锌(Ⅱ)
短句来源
  “determination of cu”译为未确定词的双语例句
    The Method of ICP-AES for Determination of Cu,Zn, Fe,Mn,Mg Content in SYFON
    ICP-AES法同时测定植丰素中的铜锌铁锰镁含量
短句来源
    Brominate-5-[4-(N-cetryl)pyridyl]10,15,20-(4-pyridyl) porphyrin is synthesized and characterized by~1HNMR,UV,IR and MS. It is used as color reagent in determination of Cu~(2+).
    合成了溴化5[4(N十六烷基)吡啶基]10,15,20(4吡啶基)卟啉,探索了其合成、分离及纯化的方法.
短句来源
    On the base of this, N-9-acridinyl glycine was applied in the fluorescent determination of Cu(Ⅱ) and it shows that the method is simple, rapid and the results are reproducible.
    结果表明,N-9-吖啶基氨基乙酸是一种高效率、高选择性、重现性好的测定Cu2+的荧光试剂。
短句来源
    By using the method of ICP-AES for determination of Cu,Zn,Fe,Mn,Mg content in SYFON, the result shows that the rate of recovery is 95.9%~107%,and relative standard deviation is 0.40%~0.60%. It can meet the requirements of determination of Cu,Zn,Fe,Mn,Mg content for import and export of SYFON and has the advantages of rapid analysis ,easy operation,high inspection efficiency etc. .
    应用ICP -AES法同时测定植丰素中的铜、锌、铁、锰、镁含量 ,结果表明 :该方法的回收率为 95.9%~ 10 7% ,相对标准偏差值为 0 .4 0 %~ 0 .60 % ,能满足进出口植丰素中的铜、锌、铁、锰、镁含量的测定要求 ,具有分析速度快、操作简便、检验效率高等优点 .
短句来源
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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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A fluorescent reagent, 3-phenyl-5-(2'-carboxylphenylazo)rhodanine (3PRACP), is synthesized. The reagent has been purified using column absorption chromatography.. Its constitution has been confirmed by elemental analysis, IR, HNMR and MS. 3PRACP reacts with Cu2+to form a chelate. To determine Cu2+ in pork and vegetable leaves, a sample (5g) was dried, carbonized, ashed, oxidized, calcinated and dissolved in HC1 (1:1) followed by dilution to 100 mL with H20. The solution (1 mL) was mixed with 0. 5...

A fluorescent reagent, 3-phenyl-5-(2'-carboxylphenylazo)rhodanine (3PRACP), is synthesized. The reagent has been purified using column absorption chromatography.. Its constitution has been confirmed by elemental analysis, IR, HNMR and MS. 3PRACP reacts with Cu2+to form a chelate. To determine Cu2+ in pork and vegetable leaves, a sample (5g) was dried, carbonized, ashed, oxidized, calcinated and dissolved in HC1 (1:1) followed by dilution to 100 mL with H20. The solution (1 mL) was mixed with 0. 5 mL 3PRACP (2. 0 10-4 mol/L), 2 mL potassium hydrogen phthalate (C8H4O4HK)-NaOH buffer solution at pH5. 6, and made up to 25 mL with water; after heating in a boiling-water bath for 25 min and cooling, the fluorescence intensity was measured at 405 nm (excitation at 305 nm) (vs. the reagent blank). The calibration graph was rectilinear in the range of 0-1. 2 fug Cu2+/ 10 mL; the detection limit was 5*10-4 ug/g. Recovery was 97% -101%. Most foreign ions did not interfere with the determination of Cu2+.

本文报道新荧光试剂3-苯基-5(2’-羧基苯偶氮)绕丹宁(3PRACP)的合成。产品经柱层析提纯,用元素分析、IR、~1HNMR及MS确证了其结构。研究了它的荧光性质,在pH5.6时,与痕量铜(Ⅱ)形成螯合物,且在λ_(ex)/λ_(em)=305nm/405nm产生强荧光,其荧光强度与铜(Ⅱ)的浓度在0~1.2μg/25mL范围内呈线性关系,灵敏度达5×10~(-4)μg/g。测定了猪肉和蔬菜中的痕量铜,结果满意。

The new water soluble reagent N Nonyl N (Sodium p Aminobenzenesulfonate) Thiourea (NPT) was synthesized and its structure was confirmed by elemental analysis,IR, UV and 1 HNMR spectra. We also tested the reaction of this new reagent on more than forty kinds of ions in different medium, it indi Cated that only Ag +,Bi 3+ ,Cu 2+ ,Hg 2+ and Ni 2+ had characteristic reaction on NPT, so NPT could be used as an identification reagent of Cu 2+ and Ni 2+ . In appraising...

The new water soluble reagent N Nonyl N (Sodium p Aminobenzenesulfonate) Thiourea (NPT) was synthesized and its structure was confirmed by elemental analysis,IR, UV and 1 HNMR spectra. We also tested the reaction of this new reagent on more than forty kinds of ions in different medium, it indi Cated that only Ag +,Bi 3+ ,Cu 2+ ,Hg 2+ and Ni 2+ had characteristic reaction on NPT, so NPT could be used as an identification reagent of Cu 2+ and Ni 2+ . In appraising Cu 2+ : m =0.037μg, c =1μg/ml, in forty three kinds of common ions none influenced the identification, we regarded NPT as one of the best reagents of identification of Cu 2+ ; In appraising Ni 2+ :m=0.12μg, c=3.3μg/ml,its sensitivity and relectivity were analogous with dimethylglyoxime. Then we determined the apparent molar absorptivity of the corresponding complexes formed by NPT and more than forty kinds of ions in the medium of weak acid, neutrality and weak base respectively. It could be used as a spectrophotometric reagent in quantitative determination of Cu 2+ and Pd 2+ . In determining Cu 2+ :ε 343.2 =4.87×10 4 L·mol -1 ·cm -1 ,forty three kinds of ions didnt influence it; In determining Pd 2+ :ε 297.2 =1.25×10 5 L·mol -1 ·cm -1 ,in fifty one kinds of ions only Cu 2+ influenced it. We acquired satisfying results when using NPT in practical sample determination. It is one of the superior reagents in analytical property using in determining Pd 2+ at present time.

合成了水溶性的新试剂N—壬基—N—(氨基对苯磺酸钠)硫脲(NPT),经元素分析、IR、UV、1HNMR测试,确定了其结构.实验了不同介质中,同40多种离子的反应情况,其中只有Ag+、Bi3+、Cu2+、Hg2+、Ni2+离子有特征性反应,可作为Cu2+、Ni2+的新鉴定试剂.鉴定Cu2+的检出限量m=0.037μg,最低浓度c=1μg/ml,43种常见离子不干扰.鉴定Ni2+的检出限量m=0.12μg,最低浓度c=3.3μg/ml.灵敏度与选择性与丁二酮肟相当.测定了在弱酸、中性和弱碱性介质中同40多种离子形成配合物的表现摩尔吸光系数,可作为分光光度法测定Cu2+、Pd2+的显色剂.测定Cu2+,ε349.2=4.87×104Lmol-1cm-1,43种离子中,只有大量Fe3+、Al3+干扰.则定Pd2+,ε297.8=1.25×105Lmol-1cm-1,51种离子只有Cu2+干扰测定,用于实际样品的检测,均获满意结果.是目前测定Pd2+的分析性能优良的试剂之一.

By using the method of ICP-AES for determination of Cu,Zn,Fe,Mn,Mg content in SYFON, the result shows that the rate of recovery is 95.9%~107%,and relative standard deviation is 0.40%~0.60%.It can meet the requirements of determination of Cu,Zn,Fe,Mn,Mg content for import and export of SYFON and has the advantages of rapid analysis ,easy operation,high inspection efficiency etc..

应用ICP -AES法同时测定植丰素中的铜、锌、铁、锰、镁含量 ,结果表明 :该方法的回收率为 95.9%~ 10 7% ,相对标准偏差值为 0 .4 0 %~ 0 .60 % ,能满足进出口植丰素中的铜、锌、铁、锰、镁含量的测定要求 ,具有分析速度快、操作简便、检验效率高等优点 .

 
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