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Table 4 Presence of radioactivity in the different extracts of the sequential extraction (applied radioactivity 5.1 kBq 14C-TNT per g soil corresponding to 120 mg 2,4,6-TNT per kg soil dm)

From: Certainties and uncertainties in accessing toxicity of non-extractable residues (NER) in soil

Soil0.01 M CaCl2Tenax20Tenax1 weekAcetonitrile shakingPLENERTotal recovery
WaterTenaxWaterTenax
Test start
 01-A47.6%4.6%28.0%1.5%5.2%2.3%0.2%2.8%92.2%
 02-A40.3%4.8%36.9%2.5%3.8%2.8%0.6%9.3%101.0%
 03-G23.5%4.9%44.7%3.5%5.6%3.6%0.8%13.4%100.0%
T = 6 months
 01-A6.1%4.3%9.3%6.6%5.4%3.7%n.d.50.4%85.8%
 02-A3.4%3.5%7.1%3.7%2.4%6.2%54.1%80.4%
 03-G1.3%2.4%5.7%2.7%2.9%5.8%63.0%83.8%