OBJECTIVETo establish the method of detecting the concentrations of bisphenol A (BPA)in air of workplaces with high performance liquid chromatographic (HPLC).

METHODSAccording to standards of methods for determining the chemical substances in workplace air, BPA in the air was collected by glass fiber filter, then dissolved by acetonitrile and determined by high performance liquid chromatography with FLD.

RESULTSThere was a linear relationship within the range of 0.01-10.0 pg /ml, and the detection limit was 0.005 pg/ml. The lowest detected concentration was 3.3x10-5 mg/m3. The relative standard deviation was 2.5-5.5%. The dissolution efficiencies were 95.0%-101.9% and the sampling efficiencies were 99.6%. The samples in glass fiber filter membrane could be stored for 7 days at room temperature.

CONCLUSIONThe present method could meet with the requirements of Guide for establishing occupational health standards-Part 4 Determination methods of air chemicals in workplace and be feasible for determination of BPA in workplace air.

Air Pollutants, Occupational ; analysis ; Benzhydryl Compounds ; Chromatography, High Pressure Liquid ; methods ; Environmental Monitoring ; methods ; standards ; Phenols ; analysis ; Workplace

Objective To verify the efficiency and safety of continuous veno-venous hemofiltration (CVVHF) therapy by using the portable continuous blood purification machine (MCBPM) at sea. Methods Four adult hybrid dogs were administered with CVVHF at sea. Performance of MCBPM was olosely observed for continuous running, the error in the amount of liquid displacement an hour and the amount of waste liquid between the machine -displayed value and the real -time value. Vital signs, blood routine and renal function of the dogs were also monitored beth before and after treatment. Results (1) Vital sign of the dogs were stable during CVVHF therapy. No significant changes in blood routine and electrolyte were noted both before and after therapy. Serum creatinine and urea nitrogen decreased significantly when compared with those before therapy. (2) The error between the machine-displayed value and the real value in the quantity of displaced liquid was 0.28%, and the error for the waste liquid was 0.17%. The machine ran smoothly and alarms went off as set by the monitoring system. Conclusions CVVHF therapy could be successfully administered to the hybrid dogs by using MCBPM onboard the ship with safe and effective results.

Objective To verify the efficiency and safety of continuous veno-venous hemofiltration (CVVHF) therapy by using the portable continuous blood purification machine (MCBPM) at sea. Methods Four adult hybrid dogs were administered with CVVHF at sea. Performance of MCBPM was olosely observed for continuous running, the error in the amount of liquid displacement an hour and the amount of waste liquid between the machine -displayed value and the real -time value. Vital signs, blood routine and renal function of the dogs were also monitored beth before and after treatment. Results (1) Vital sign of the dogs were stable during CVVHF therapy. No significant changes in blood routine and electrolyte were noted both before and after therapy. Serum creatinine and urea nitrogen decreased significantly when compared with those before therapy. (2) The error between the machine-displayed value and the real value in the quantity of displaced liquid was 0.28%, and the error for the waste liquid was 0.17%. The machine ran smoothly and alarms went off as set by the monitoring system. Conclusions CVVHF therapy could be successfully administered to the hybrid dogs by using MCBPM onboard the ship with safe and effective results.