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SIMULTANEOUS DETERMINATION OF SIX METAL ELEMENTS OF MICRO-AMOUNTS IN PURE p-PHTHALIC ACID BY ICP-AES

Qian Yan-hu

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Abstract

ICP-AES analysis was applied to the simultaneous determination of microamounts of six metal elements, i.e. sodium, iron, nickel, chromium, cobalt and manganese, in refined p-phthalic acid. Various influential factors were studied and the working parameters of the instrument were optimized. A comparative study with the AAS method was made and consistent results were obtained. RSD′s (n=5) for determination of the above mentioned elements were found to be in the range from 3%～10%, and recoveries obtained were in the range of 94.0%～104.0%. The results of this work may be taken as reference in the analysis of other chemicals.

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What this paper is about

ICP-AES analysis was applied to the simultaneous determination of microamounts of six metal elements, i.e. sodium, iron, nickel, chromium, cobalt and manganese, in refined p-phthalic acid. Various influential factors were studied and the working parameters of the instrument were optimized. A comparative study with the AAS method was made and consistent results were obtained. RSD′s (n=5) for determination of the above mentioned elements were found to be in the range from 3%～10%, and recoveries obtained were in the range of 94.0%～104.0%. The results of this work may be taken as reference in the analysis of other chemicals.

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Available abstract

ICP-AES analysis was applied to the simultaneous determination of microamounts of six metal elements, i.e. sodium, iron, nickel, chromium, cobalt and manganese, in refined p-phthalic acid. Various influential factors were studied and the working parameters of the instrument were optimized. A comparative study with the AAS method was made and consistent results were obtained. RSD′s (n=5) for determination of the above mentioned elements were found to be in the range from 3%～10%, and recoveries obtained were in the range of 94.0%～104.0%. The results of this work may be taken as reference in the analysis of other chemicals.

Key concepts: Phthalic acid, Chromium, Manganese, Chemistry, Cobalt, Inductively coupled plasma atomic emission spectroscopy, Sodium diethyldithiocarbamate, Nickel

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