Determination of tetraalkyllead compounds in water, sediment, and fish samples

The fate and behavior of lead alkyls in the environment: A review

“…92 GC-AAS detection limits for TAL in water and sediment samples are 0.50 |xg r 1 and 0.01 \xg g~\ respectively. 121 The GC-GFAAS detection limits for TAL in water and sediment samples are 0.1 |xg I" 1 and 0.015 |xg g~\ respectively. 92120 The GC-AAS detection limits for ionic Pb alkyls in water and sediment are 1.5 x 10-*to2.0 x 10" 2 jutg 1~ ' and 2.5 x 10~3 fjig g" 1 , respectively.…”

“…7 -120 Benzene also can be used. 121 TAL in sediments, and possibly in soils, can be extracted easily with hexane. 120 Five grams of wet sediment, 5 ml of EDTA (0.1 mol 1~'), and 5 ml of hexane are placed in a 25-ml culture tube with a Teflon-lined screw cap.…”

An investigation of the interaction of trialkyllead compounds with humic acids

“…As previous work has shown, the trialkyllead compounds are more toxic than their inorganic homologs (1,2) and thus, their behaviour in the environment should be investigated. Humic acids are widely distributed in soils and have diverse roles within geochemistry and plant physiology (3,4,5).…”

Formation of tetramethyltin from trimethyltin precursors in sediment environments

“…There have been a number of observations of methyl tin derivatives in natural waters and biota [2][3][4][5] and these probably do not arise solely from industrial or laboratory use of the various methyltin compounds. There have also been reports of methyl lead compounds in the environment which may not have arisen from leaded gasoline [6][7][8][9]. In addition several laboratory demonstrations have suggested that inorganic tin and lead compounds may be incubated in samples of natural sediments or micro-organisns to produce small yields of methyl metal products [10][11][12].…”