Rapid Dertermination of Acrylic Thiourea and Fe￣(2+) Ion in Copper Immersion Plating Solution

根据铂电极上丙烯硫脲对铜电沉积过程的阻化效应和fE2＋离子的电化学氧化特性，用dz-1b型电镀添加剂测定仪快速测定浸铜液中丙烯硫脲和fE2＋离子浓度。A rapid and simple method For determination of acrylic thiourea and Fe2+ ion content with DZ-1B Electroplating Addtive Analyser is based on the inhibitive eFFect of acrylic thiourea in copper electrodeposit and the electrochemical oxidation property of Fe2+ ion on platnium electrode in copper immersion plating solutio

Rapid Determination of Cl￣-Ion Concentcation in Nickel Plating Solution

根据Cl-离子在怕电极上的电化学氧化特性，用dz-1b型电镀添加剂测定仪可快速测定镍镀液中Cl-离子的浓度。此法也适用于镍电铸液。Concentration of C1-ion in nickel plating solution may be rapidly determined on Electroplating Additives Analyser Model DZ-1B based on the elect-ro-oxidation characteristics of C1- ion at platinum disc electrode.The method is also applicable For nickel electroforming solutions

伏安法快速测定黑铬镀液中硝酸钠的浓度

测量镍盘电极在黑铬镀液中的阴极极化曲,观察到硝酸钠存在时出现一个新的阴极电流峰,且在一定的硝酸钠浓度范围内（0.3~1.5g/l）,电流峰值随着硝酸钠的浓度线性地增大。因此,可用伏安法快速测定黑铬镀液中硝酸钠的浓度

Application of Color Calibration Methods for the Tongue-color Images under Nature Indoor Light

目的建立一种室内非直射自然光条件下的医学图像颜色校正分析方法并初步应用。方法根据色彩还原算法结合自制彩色、灰度色标作为校正的监督色标建立TrM颜色校正方法,并对410幅舌色图像进行了校正。结果舌色A*、b*值除淡白舌组外,校正前后各组均有显著性差异(P<0.05),校正后A*、b*值离散度和变异系数较校正前减小。49例典型舌象校正后fISHEr'S分类方法与人工分类比较总体一致率75.5%,一致性检验结果kAPPA值为0.675(P<0.05)。结论不同舌象颜色经拓扑剖分-影射还原法校正后能较好的体现其l*A*b*颜色特征。拓扑剖分-影射还原模型校正方法能明显降低自然光条件下舌色图像的色差,具有良好的颜色校正效果。OBJECTIVE To establish a calibration analysis approach of medical image color under the circumstance of non-direct natural indoor light,and use it.METHODS TRM(Topology Resolve-Map) calibration method was established in accordance with the color reduction algorithm,with self-made color and grey patches being supervision color control patches;it was applied to correct 410 cases of clinical tongue image.RESULTS The before and after calibrated a *,b * values of each group's tongue color were significantly different(P<0.05) except for that of whitish group.Compared with pre-calibration,the dispersion and variation coefficient of post-calibration a*,b* values decreased.The overall consensus rate was 75.5% after using Fisher's classification method and artificial classification method to analyze 49 corrected typical tongue cases,with the Kappa value of consistency test result of 0.675(P<0.05).CONCLUSION The characteristics of L*a*b* in varied tongue colors can be better demonstrated after the calibration with TRM.TRM model approach can significantly reduce the color errors of tongue images under natural indoor light,which demonstrates its good color calibration effect.国家高技术研究发展计划(2008AA02Z407);国家自然科学基金(30873463;30300443

伏安法快速测定镍镀液中Cr(Ⅵ)离子的浓度

根据镍镀液中Cr(VI)离子与过量fE-(2+)离子的定量反应,通过测定剩余fE-(2+)离子在铂电极上的电化学氧化电流,从而求得Cr(VI)离子的浓度.实验结果表明,镍镀液常用的添加剂和常见的金属杂质不干扰Cr(VI)离子的浓度测定.此法可检测镍镀液中Cr(VI)离子的浓度下限为4Mg/l(低于工艺允许量10Mg/l),操作简便快速.适用于电镀生产的现场监控

Determination Chloride Ion Concentration in Electroplating Bath by means of Voltammetry

根据氯离子在铂电极上的电化学氧化特性，用dz-1b型电镀添加剂测定仪测定镍、铬、铁和铜镀液中氯离子的浓度。操作简便、快速，适用于电镀车间的镀液分析。The concentration of chloride ion in electroplating bath is determined with an Electroplating Addieives Analyser.This determination is based on Characteristic of Cl- at platium electrode .The analytical process is simple, rapid and Suitable For analysis in electroplating workshop

RAPID DETERMINATION of CI- IN Cr PLATING BATH BY VOLTAMMETRY

根据Cl-离子在铂盘电机上的电化学氧化特性，用dz-1b型电镀添加剂测定仪测定镀铬液中Cl-离子浓度。方法简便、快速。并适用于镀锌低铬钝化液中Cl-离子和Ag＋离子测定

RAPID DETERMINATION of H_2SO_4 CONCENTRATION IN Cr PLATING BATH BY VOLTAMMETRY

测量镍盘电极在镀铬液中的阴极极化曲线，观察到硫酸存在时出现一个新的阴极电流峰，且在一定的硫酸浓度范围内（0.5~2.5g/l），电流峰值随硫酸的浓度线性地增大，因此可用伏安法快速测定镀铬液中硫酸的浓度

Rapid Determination of Ni￣(2+), Fe￣(2+)and Cl-Ions Concentration in Ni and Ni-Fe Plating Baths

根据nI2＋在汞膜电极上的电化学还原和fE2＋、Cl在铂电极上的电化学氧化特性，采用dz-lb型电镀添加剂测定仪快速测定镍和镍铁镀液中nI2＋、fE2＋和Cl-的浓度。操作简便，快速，适用于电镀车间的镀液分析

Voltammetric Determination of H_2SO_4 and HNO_3 Concerntration in Chromating Bath

采用伏安法测量镍盘电极在铬酸钝化液中的阴极极化曲线。本方法是先测定钝化液硫酸和硝酸存在时阴极极化的总电流峰值，然后加入适当过量的碳酸钡，使溶液中的SO24离子完全沉淀，再测定此时阴极极化的电流峰值。由于电流峰值与硝酸、硫酸浓度是线性关系，从而分别测得硝酸和硫酸的浓度。Voltammetric determination of nickel disk cathodic polarization curve in chromating bath is presented.In the determination, the First measurement of the total peak current on polarization curve is taken in the bath containing H2SO4 and HNO3 and the second measurement of the same is taken aFter SO24-ion is completely precipitated by adding appropriate excessive amount of BaCO3 The peak current measured exhibits a linear relationship with concerntration of H2SO4 and HNO3 respectively