“…Improved understanding of the relationships between results of sequential extraction and measured biological uptake can be obtained by analyzing samples of biota in parallel with sequential extraction of the soils or sediments on which they live. Many studies of this type have appeared in recent years, focusing on a variety of organisms: microbes; 40,225,226 plants (lettuce, [227][228][229][230] alfalfa, 231 wheat, 226,[232][233][234][235] maize, 236 brassicas, 132,182,237 trees, 238 rice, 239 peanut, 240 basil, 241 Swiss chard, 241 sea rush, 242 tall fescue, 243 tea, 244 corn, 245 parsley, 230 dill 230 and onion 230 ) and animals (mussels, [246][247][248][249] rag worms, 249 fish, 250 spiders, 251 earthworms 44,174,252,253 and rats 254 ). However, considerable further research is needed.…”