An environmentally friendly,sensitive and simple method was developed for the determination of trace lead in water samples by air mixing sorption flow injection(FI) on-line preconcentration procedure in a knotted reactor coupled with flame atomic absorption spectrometry(FAAS).

With high ligand density, mixed mode adsorption shows a salt-independent adsorption property.

Microcosmic mechanism of coal surface to multiple gas molecules mixed adsorption;

Solvent extraction,steam distillation and gas absorption methods were respectively adopted to extract the volatile organic compounds from Lycopersicon esculentum leaves and the compounds were separated and identified by GC/MS spectrometry.