ABSTRACT
Objective To investigate phthalate esters in the muscle tissues of fresh water fish in fishponds in Pearl River Delta and Hong Kong,China,Nov,2005.Methods The samples from Pearl River Delta and Hong Kong,China,were analyzed by capillary gas chromatography with FID detector through the procedure of freeze-dried,soxhlet extraction,decontaminating with alumina-silica gel columniation in Nov,2005.Results The concentration of six sorts of PAEs was detected.The concentration of DEHP was 16.10 mg/kg(dry weight),19.81 mg/kg and 11.03 mg/kg in crucian carp,grass carp and tilapia from Pearl River Delta,while being 35.97,37.98 and 26.12 mg/kg for the same species from HK respectively,but the DMP showed the lowest value,only about 0.54 mg/kg.The concentration of DBP and BOP ranged from 3 to 10 mg/kg.Conclusion The fresh water fish from Pearl River Delta were polluted by DEHP,DBP and BOP significantly and the level of pollution is different among various areas.
ABSTRACT
Objective To investigate the residues of antibiotics such as quinolones in fishes from Guangzhou aquatic products market.Methods The residues of three kinds of quinolones(NFLX,CPFX and ENFX) in four kinds of fishes collected from five agriculture products markets in Guangzhou were determined by RP-HPLC.Results NFLX was detected in all samples,ranged from 2.19-192.8 ng/g with the maximum concentration of 192.8 ng/g,the detection rate of CPFX was 40% with the average concentration of 4.34 ng/g,ranged form 0-25.36 ng/g,the detection rate of ENFX was 45% with the average concentration of 6.83 ng/g.Three kinds of quinolones were found with high detection rate in Micropterus salmoides and Anguilla japonica,the average detection rates of NFLX,CPFX and ENFX in muscle tissues of Micropterus salmoides were 100%,40% and 100% respectively,that in Anguilla japonica were 100%,40% and 80% respectively.Low rate of ENFX was found in Monopterus albus and Ctenopharyngodon idellus muscle tissues,the average detection rates were 20% and 10%.Higher pharmaceuticals concentrations were detected in the liver than those in the muscle tissue.Conclusion The residues of quinolones in the muscle tissue of fish sold in Guangzhou is considered eligible based on the related standards.