A reverse flow-injection spectrophotometric method with diphenyl carbazide as developer and sulfuric acid as medium for determination of Cr(Ⅵ) in electroplating waste water and sludge has been developed.

Reverse flow injection-chemiluminescence determination of aniline;

A new catalytic spectrophotometric method for the determination of trace iodide has been established by reverse flow injection technique based on iodide catalyzing determination reaction of victoria blue(B) with potassium bromate in the phosphoric acid.

Based on the enhancement effect of lanthanum (Ⅲ) on chemiluminescence produced by KIO4 oxidation on luminol in alkaline medium, a new analytical method is developed for lanthanum (Ⅲ)  determination combined with the reverse flow injection technique.

A new reversed flow injection analysis coupling with spectrophotometry for simple,rapid and direct determination of trace amounts of zinc ion in seawater was proposed,which was based on the reaction of 1-(2-Pyridineazo)-2-naphthol(PAN) with zinc ion in the alkali medium to form ML2 chelate complex,and on the sensitization and stabilization in the presence of the Tween 80.

Study on determination of carbaryl pesticides in vegetable by flow injection biosensor;

On line supported liquid membrane enrichmentflow injection spectrophotometric determination of trace cadmium(Ⅱ) in water;

On-line microwave digestion for the determination of total phosphorus in circulating water by flow injection spectrophotometry;

Determination of meloxicam by potassium permanganate-sodium sulfite flow-injection chemiluminescence system;

Flow-injection chemiluminescence determination of aniline in water;

Flow-injection chemiluminescence determination of deslanoside;