[Adsorption of Residual Pesticide Glyphosate Isopropylamine in Surface Water by Modified Biomass Materials].

Effective treatment of pesticide residue-induced pollution in the aqueous environment is the key to improving the water quality of rivers and lakes. Modified biomass material (Fe-Al-PS) was successfully prepared by impregnating Fe and Al bimetallic compounds to peanut shell powder for adsorption of glyphosate isopropylamine salt herbicide residues in aqueous environments. Fe-Al-PS reached adsorption equilibrium for 10 mg·L of glyphosate isopropylamine salt at the adsorbent dosage and adsorption time of 0.

[Chemiluminescence determination of 6-mercaptopurine in the luminol-potassium ferricyanide system].

A novel chemiluminescence (CL) method to determine 6-mercaptopurine (6-MP) is described, based on the catalytic effect of 6-MP on the CL reaction of luminol with K3Fe(C-N)6 in a flow system. Under optimal experimental conditions, the calibration graph is linear in the range of 1.02 x 10(-7) to 1.

[Recent progress in flow-injection chemiluminescence for pharmaceutical analysis].

Flow-injection chemiluminescence(FI-CL) analysis has made great progress in analytical chemistry for its high sensitivity with a wide linear range, simple instruments, rapidity and reproducibility in signal detection, and being appropriate for on-line analysis. A review with 74 references dating from 2002-early 2004 is given of the application of FI-CL method in the determination of drugs.