Determination of trace amounts of nickel, manganese, cobalt, and zinc in environmental samples after separation and preconcentration by use of polyacrylic acid/alumina sorbent.
Manganese, nickel, cobalt, and zinc are elements that appear together in many real samples. In this work, a simple, rapid, and sensitive method has been used for the simultaneous separation and preconcentration of trace amounts of these elements using water-soluble polyacrylic acid on alumina as a sorbent in a glass column system. A solution containing Mn, Ni, Co, and Zn was passed through the column at pH 7, and desorption was carried with 5.0 mL of 0.03 M nitric acid. Linearity was maintained between 0.25-5.0 x 10(3), 0.04-6.0 x 10(3), 0.10-8.0 x 10(3), and 0.028-1.0 x 10(3) ng/mL for Ni, Mn, Co, and Zn, respectively, in the original solution. Eight replicate determinations of a mixture containing 1.0 microg/mL of each of the elements in the final solution gave relative standard deviations of 1.4, 1.5, 2.4, and 1.2% for Ni, Mn, Co, and Zn, respectively. The sorption capacities for Mn (mg/g sorbent) obtained were 16.0 for Mn, 9.0 for Ni, 12.0 for Co, and 10.0 for Zn. By using 5.0 mL elution solution, preconcentration factors of 400, 500, 700, and 460 could be obtained for Ni, Mn, Zn, and Co, respectively.
Sabermahani
Fatemeh
F
Shahid Bahonar University of Kerman, Department of Chemistry, PO Box 76175-133 Kerman, Iran. fatemehsaber2003@yahoo.com
Taher
Mohammad Ali
MA
D000180:Acrylic Resins; D000327:Adsorption; D000537:Aluminum Oxide; D003035:Cobalt / Q000032:analysis; D004785:Environmental Pollutants / Q000032:analysis*; D008345:Manganese / Q000032:analysis; D009532:Nickel / Q000032:analysis; D012995:Solubility; D013054:Spectrophotometry, Atomic / Q000379:methods* / Q000706:statistics & numerical data; D014131:Trace Elements / Q000032:analysis*; D014867:Water; D014874:Water Pollutants, Chemical / Q000032:analysis; D015032:Zinc / Q000032:analysis
D000180:Acrylic Resins; D004785:Environmental Pollutants; D014131:Trace Elements; D014874:Water Pollutants, Chemical; D014867:Water; D003035:Cobalt; D008345:Manganese; C006903:carbopol 940; D009532:Nickel; D015032:Zinc; D000537:Aluminum Oxide