Citation:
GUO Zhi-An, ZHANG Xiao-Hui, ZHAO Jing-Chan, LIANG Xiao-Yun. Quantitative Analysis of Organic Acids in Electroless Plating Solution by Ion Suppression Chromatography[J]. Chinese Journal of Applied Chemistry,
;2006, 23(4): 386-389.
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A method for the analysis of 4 organic acids(aminoacetic acid,lactic acid,acetic acid, citric acid) in electroless plating solutions was developed.The analysis could be finished within 6 min.It is based on an ion suppression chromatographic separation under the conditions of isocratic elution with 25 m mol/L phosphate buffer solution(pH=2.1) on a Hypersil ODS column,and UV detection at 210 nm.Linear calibrations were obtained within 0.05×10-3~5×10-3 g/mL(r>0.999 4).The limits of detection(mg/L) were 6 of aminoacetic acid,20 for lactic acid,14 for acetic acid and 9 for citric acid,respectively.The average recovery rate was(n=6) 98.12%~102.60%,and the relative standard deviation(n=6) 0.31%~0.98%.Through the formula for distribution coefficient,and with the pH value of the original solution,the contents of different forms of each organic acid were figured out.
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