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STUDY ON THE METHOD OF DETERMINATION OF TOTAL CHROMIUM IN WORKPLACE WITH FLAME ATOMIC ABSORPTION SPECTROPHOTOMETRY

Cao Hai-la

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Abstract

[Objective]To study the effect of determination of total chromium by using flame atomic absorption spectrophotometry and its method of eliminating the intervention,so as to establish the method of detecting the chromium in workplace by using flame atomic absorption spectrophotometry.[Methods]The chromium in the air was collected by microporous membrane concentration,followed by using acid digestion.The digestion liquid was sprayed over the flame,finally the chromium content was determined.[Results]The detection limit was 1.67×10-3 mg/m3(The calculation was based on the collected 75 L air sample);The concentration of solution was detected significantly linear correlation at the range of 0.005-3.0 mg/L,and the relative standard deviation was 4.87%;The recovery rate was at the range of 104.3%-107.0%.[Conclusion]This method is suitable for determination of chromium and its compounds in the air of workplace.

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What this paper is about

[Objective]To study the effect of determination of total chromium by using flame atomic absorption spectrophotometry and its method of eliminating the intervention,so as to establish the method of detecting the chromium in workplace by using flame atomic absorption spectrophotometry.[Methods]The chromium in the air was collected by microporous membrane concentration,followed by using acid digestion.The digestion liquid was sprayed over the flame,finally the chromium content was determined.[Results]The detection limit was 1.67×10-3 mg/m3(The calculation was based on the collected 75 L air sample);The concentration of solution was detected significantly linear correlation at the range of 0.005-3.0 mg/L,and the relative standard deviation was 4.87%;The recovery rate was at the range of 104.3%-107.0%.[Conclusion]This method is suitable for determination of chromium and its compounds in the air of workplace.

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Available abstract

[Objective]To study the effect of determination of total chromium by using flame atomic absorption spectrophotometry and its method of eliminating the intervention,so as to establish the method of detecting the chromium in workplace by using flame atomic absorption spectrophotometry.[Methods]The chromium in the air was collected by microporous membrane concentration,followed by using acid digestion.The digestion liquid was sprayed over the flame,finally the chromium content was determined.[Results]The detection limit was 1.67×10-3 mg/m3(The calculation was based on the collected 75 L air sample);The concentration of solution was detected significantly linear correlation at the range of 0.005-3.0 mg/L,and the relative standard deviation was 4.87%;The recovery rate was at the range of 104.3%-107.0%.[Conclusion]This method is suitable for determination of chromium and its compounds in the air of workplace.

Key concepts: Chromium, Atomic absorption spectroscopy, Spectrophotometry, Detection limit, Chemistry, Linear range, Microporous material, Analytical Chemistry (journal)

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STUDY ON THE METHOD OF DETERMINATION OF TOTAL CHROMIUM IN WORKPLACE WITH FLAME ATOMIC ABSORPTION SPECTROPHOTOMETRY — Research Paper | ScholarLens