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   simultaneous spectrophotometric determination 的翻译结果: 查询用时:0.013秒
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simultaneous spectrophotometric determination     
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  同时测定
     Simultaneous Spectrophotometric Determination of Trace Ferrum and Cobalt with 5-Br-PADAP and Tween-80
     Tween-80-5-Br-PADAP光度法同时测定微量铁和钴
短句来源
     Simultaneous Spectrophotometric Determination for Fe(II)、Fe(III)by Artificial Neural Networks
     人工神经网络光度法同时测定水中Fe(II)、Fe(III)
短句来源
     The artificial neural network was used for simultaneous spectrophotometric determination in ternary micelle complex of XO-CTMAB-Cu,Cd,Ni with satisfactory results. The mean recovery of Cu,Cd,Ni is 99.62%,99.93%,100.24%,respectively.
     利用人工神经网络结合分光光度法用于二甲酚橙(XO)-CTMAB-Cu、Cd、Ni显色体系同时测定Cu()、Cd()和Ni(),方法简单,结果满意,其三者的平均回收率分别为99.62%、99.93%、100.24%。
短句来源
     Simultaneous spectrophotometric determination of copper and nickel with 2-(5-nitro 2-pyridylazo)-H acid
     2-(5-硝基2-吡啶偶氮)-H酸光度法同时测定铜和镍
短句来源
     Simultaneous Spectrophotometric Determination of Vanadium and Indium with 4,5-Dibromophenylfluorone and CTMAB
     4,5-二溴苯基萤光酮-CTMAB 体系同时测定 V(Ⅳ)和 In(Ⅲ)的研究
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  分光光度法同时测定
     Simultaneous spectrophotometric determination of Fe(Ⅱ) and Fe(Ⅲ) by flow injection analysis
     流动注射分光光度法同时测定Fe(Ⅱ)和Fe(Ⅲ)
短句来源
     Partial Least-Squares Regression Analysis for Simultaneous Spectrophotometric Determination of Fe~(3+) and Al~(3+)
     偏最小二乘分光光度法同时测定Fe~(3+)和Al~(3+)
短句来源
     Studies on Simultaneous Spectrophotometric Determination of Traces of Molybdenum and Tungsten by Using 6BrBTAPC and Three Wavelength Method
     6-Br-BTAPC三波长分光光度法同时测定痕量钼和钨的研究
短句来源
     Simultaneous spectrophotometric determination of copper, zinc and nickel using 5-Br-PADAP as the color developing reagent with hybrid linear analysis (HLA) method was studied.
     研究以5 Br PADAP为显色剂,用混合线性分析分光光度法同时测定铜、锌、镍。
短句来源
     Simultaneous spectrophotometric determination of vitamin B_1 and vitamin B_2 in food by charge-coupled device-diode array detection
     CCD-二极管阵列分光光度法同时测定食品中的维生素B_1和维生素B_2
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  分光光度同时测定
     SIMULTANEOUS SPECTROPHOTOMETRIC DETERMINATION OF TUNGSTEN AND MOLYBDENUM BY THE LINEAR REGRESSION METHOD OF MULTI WAVELENGTH DATA
     多波长数据线性回归法分光光度同时测定微量钼和钨
短句来源
     A novel method for simultaneous spectrophotometric determination of iron,copper and zinc in lubricating oil using wavelet packet transform-RBF neural network is presented.
     将小波包压缩-RBF网络方法用于润滑油中铁铜锌三组分分光光度同时测定
短句来源
     Simultaneous Spectrophotometric Determination of Nickel and Cobalt by Differences Between thief Chemical Properties
     借化学性质差异分光光度同时测定镍和钴
短句来源
     Simultaneous Spectrophotometric Determination of Al and Fe by Use of Linear Regression
     波长回归法分光光度同时测定铝和铁
短句来源
     Simultaneous Spectrophotometric Determination of Nitrate and Nitrite in Water and Soil Extracts by Flow Injection Analysis
     水及土壤浸出液中 NO_3~--N 和 NO_2~--N 的流动注射分光光度同时测定
短句来源
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  同时分光光度测定
     APPLICATION OF PLS METHOD IN SIMULTANEOUS SPECTROPHOTOMETRIC DETERMINATION OF TRACE METAL IONS
     PLS法在同时分光光度测定痕量金属离子中的应用
短句来源
     STUDIES ON SIMULTANEOUS SPECTROPHOTOMETRIC DETERMINATION OF COPPER(Ⅱ),IRON(Ⅲ),LEAD(Ⅱ)AND ZINC(Ⅱ)
     铜(Ⅱ)、铁(Ⅲ)、铅(Ⅱ)和锌(Ⅱ)同时分光光度测定的研究
短句来源
     Simultaneous Spectrophotometric Determination of Inorganic Multicom-ponent System by Matric Calculation——Determination of Copper and Cobalt with PAN.
     用矩阵计算法同时分光光度测定无机多组分体系—PAN同时测定铜、钴
短句来源
     Simultaneous Spectrophotometric Determination of Trace Manganese, Nickel, Copper and Zinc in Grain
     粮谷中痕量锰、镍、铜、锌的同时分光光度测定
短句来源
     Simultaneous Spectrophotometric Determination of Mixtures of W、Mo and Zr with Partial Least Squares Method
     偏最小二乘法同时分光光度测定W、Mo、Zr的研究
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      simultaneous spectrophotometric determination
    Application and comparison of two-rate and differential kinetic methods in simultaneous spectrophotometric determination of asco
          
    Simultaneous spectrophotometric determination of benzyl alcohol and diclofenac in pharmaceuticals using methods based on the fir
          
    A multivariate calibration method, Partial Least Squares Type 1 (PLS-1), is proposed for simultaneous spectrophotometric determination of uranium and thorium ions as their complexes with arsenazo III in hydrochloric acid medium.
          
    Cloud Point Extraction Simultaneous Spectrophotometric Determination of Zn(II), Co(II) and Ni(II) in Water and Urine Samples by
          
    Solid Phase Extraction and Simultaneous Spectrophotometric Determination of Trace Amounts of Copper and Iron Using Mixture of Li
          
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    The error of results in simultaneous spectrophotometric determination is discussed. The condition number of the coefficient matrix has a great effect on the calculated results. For an ill-conditionned matrix, you can not ensure reliable results by use of a non-negative contraint. In these conditions, addition of stricter constraint is necessary.A new constrained optimization, the improved alternating variate method is described. By this method it is possible to add arbitrary constraints for any variate,...

    The error of results in simultaneous spectrophotometric determination is discussed. The condition number of the coefficient matrix has a great effect on the calculated results. For an ill-conditionned matrix, you can not ensure reliable results by use of a non-negative contraint. In these conditions, addition of stricter constraint is necessary.A new constrained optimization, the improved alternating variate method is described. By this method it is possible to add arbitrary constraints for any variate, and it is found satisfactory to the systems in which the condition number of coefficent matrix is larger.The method is applied successfully to the simultaneous spectrophotometric determination of light rare earth elements La, Pr, Nd, Sm. Using the data of general accuracy (experimental erroe≤3%), and satisfactory results can be obtained.Applying two systems in measurement(using chloro-phosphonazo and carboxynitrazo as chromogenic reagents) is suggested to improve the condition number of the coefficient matrix.

    本文提出以各因素同时改进的因素轮换法来处理多组份混合物溶液的吸收光谱,方法能对任一组份加以任意的约束,因而适用于“病态体系”。用两种显色体系的数据联合解矛盾方程,进行La、Pr、Nd、Sm四组份的同时测定,计算得到满意的结果。

    A method for the simultaneous spectrophotometric determination of iron (Ⅲ) and titanium (Ⅳ) in mixtures based on the formation of diantipyrilmethane (DAM) complexes with absorbance maxima of 390 and 460nm has been developed, and its application for their determination in aluminum alloy has been proved to be feasible.In general, photometric determination of iron and titanium in aluminum alloys is separately performed because the presence of one ion interfers with the determination of the...

    A method for the simultaneous spectrophotometric determination of iron (Ⅲ) and titanium (Ⅳ) in mixtures based on the formation of diantipyrilmethane (DAM) complexes with absorbance maxima of 390 and 460nm has been developed, and its application for their determination in aluminum alloy has been proved to be feasible.In general, photometric determination of iron and titanium in aluminum alloys is separately performed because the presence of one ion interfers with the determination of the other. In addition, although authors have earlier described the individual determination of iron (Ⅲ) and titanium (Ⅳ), no one has hitherto suggested a method of simultaneous spectrophotometric determination of iron ( Ⅲ ) and titanium (Ⅳ) with DAM.In the present paper, the eight variations described (including the solution of simultaneous equations, experimental coefficient method, dualwavelength spectrophotometry, identical molar absorptivity point method, and modified curves method) are all so simple that separations and methods for avoiding the interference of other ions are not necessary, and two ions can be determined with a single operation in the same aliquot.The experimental results showed that the method is applicable for the simultaneous spectrophotometric determination of 10-120μg of titanium and of 10-250μg of iron in aluminum alloys. Such a method generally gave a variation coefficient of 3-5% and a recovery of 90-108%. The method is simple, fast, accurate and reproducible.Future use of the technique is briefly discussed.

    考查了用二安替比林甲烷(DAM)光度测Fe(Ⅲ)的条件,测定了Fe(Ⅲ)-DAM的组成及K_稳,提出用DAM在一份试液中不经分离或掩蔽而同时用分光光度法测定不同含量比的微量铁和钛的八种方法,在相应条件下效果均好。用于多种铝合金分析,精密度及回收率皆称满意,方法简便、快速。

    A new method for the simultaneous spectrophotometric determination of nitrate and nitrite in water and soil extracts by flow injection analysis with non-carcinogenic compound,α-naphthylamine-7-sulphonic acid and sulfanilamide as developing agent was proposed. An on-line cadmium-coated zinc reductor column was used to reduce nitrate to nitrite. Potassium sodium tartrate was found to promote the reaction rate. This was especially advantageous when applied to the flow injection analysis.The detection limits...

    A new method for the simultaneous spectrophotometric determination of nitrate and nitrite in water and soil extracts by flow injection analysis with non-carcinogenic compound,α-naphthylamine-7-sulphonic acid and sulfanilamide as developing agent was proposed. An on-line cadmium-coated zinc reductor column was used to reduce nitrate to nitrite. Potassium sodium tartrate was found to promote the reaction rate. This was especially advantageous when applied to the flow injection analysis.The detection limits were 10μg/1 for NO_3~--N and 1μg/l for NO_2~--N.The precision was 0.7% for NO_3~--N at a level of 2mg/l and 1% for NO_2~--N at 1mg/l. The sampling rate was 60 samples per hr,i.e.120 determinations per hr.The optimization of reaction coil length,sample volume, potassium sodium tartrate concentration and reductor length were discussed.

    本文提出采用流动注射技术,以分光光度计为检测器,同时测定水及土壤浸出液中NO_3~-—N和NO_2~-—N的方法。以非致癌性化合物α-萘胺-7-磺酸和磺胺为显色剂,在520nm下比色。流路中装有镀镉锌粒还原柱,把NO_3~--N还原为NO_2~--N。NO_2~--N的检出限是0.005mg/l,NO_3~--N是0.020mg/l。在含量为1mg/l时NO_2~--N的变异系数是1%;在含量为3mg/l时NO_3~--N的变异系数是0.5%。由于引入双通道交替进样旋转定容采样阀,可以交替地对同一样品进行两项测定。分析速度为60样/小时双项测定,即120次/小时。

     
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