Preconcentration and determination of trace amounts of lead (II) as thenoyltrifluoroacetone complex with dibenzo-18-crown-6 by synergistic extraction and atomic absorption spectrometry
1998 ◽
Vol 361
(5)
◽
pp. 451-454
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1986 ◽
Vol 1
(6)
◽
pp. 457-459
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1997 ◽
Vol 357
(1)
◽
pp. 61-64
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1988 ◽
Vol 61
(8)
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pp. 2791-2795
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2005 ◽
Vol 18
(105)
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pp. 391-396
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2003 ◽
2015 ◽