Simultaneous determination of trace amounts of chromium, cobalt and lead in waste water and plant materials by extraction -- atomic absorption spectrometry

Journal Article · Wed Apr 01 04:00:00 EST 1998 · Analytical Letters

DOI:https://doi.org/10.1080/00032719808002844· OSTI ID:638292

Balaji, T; Chiranjeevi, P; Naidu, G R.K. ^[1]

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1. Sri Venkateswara Univ., Tirupati (India). Dept. of Chemistry

A simple and rapid procedure has been developed for the determination of Cr, Co and Pb in waste water and plant materials by flame atomic absorption spectrometry (FAAS). In this method the metals are complexed with potassium propyl xanthate and extracted into methyl isobutyl ketone (MIBK) and analyzed. Optimum conditions for quantitative determination of metals viz chromium, cobalt and lead are established by studying various parameters like the percentage of recovery in different solvents like butyl acetate, diisobutyl ketone, methyl isobutyl ketone and ethyl acetate, effect of reagent concentration and effect of pH. The data showed that the method could be employed for the determination of aforesaid metals in waste water and plant materials in the concentration range of 0.06--0.8 {micro}g/ml of cobalt and 0.12--1.6 {micro}g/ml of chromium and lead. The reliability of the method was assured by analyzing the Standard Reference Materials and by inter-comparison of Cr, Co and Pb values using inductively coupled plasma atomic emission spectrometry.

• Sponsoring Organization: USDOE
• OSTI ID: 638292
• Journal Information: Analytical Letters, Journal Name: Analytical Letters Journal Issue: 6 Vol. 31; ISSN ANALBP; ISSN 0003-2719
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
ABSORPTION SPECTROSCOPY
CHROMIUM
COBALT
LEAD
MONITORING
TRACE AMOUNTS
WASTE WATER
WATER POLLUTION
WATER POLLUTION ABATEMENT