[Analysis of paraquat in blood and urine by sodium borohydride/nickel chloride chemical reduction-gas chromatography/thermionic specific detector].
Fa Yi Xue Za Zhi
; 24(6): 429-32, 2008 Dec.
Article
em Zh
| MEDLINE
| ID: mdl-19241969
ABSTRACT
OBJECTIVE:
To establish a new method for the analysis of paraquat in blood and urine by sodium borohydride/nickel chloride chemical reduction-gas chromatography/thermionic specific detector.METHODS:
An initial procedure of precipitation was performed by adding hydrochloric solution with sodium chloride and a mixture of chloroform and ethanol. Then the analyte contained in supernatant was reduced by a reduction system of sodium borohydride and nickel chloride and extracted by acetic ether. Ethyl paraquat (EPQ) was used as internal standard. GC/TSD was used to identify and quantify the analyte.RESULTS:
The limits of detection (S/N=3) in blood and urine were 0.002 and 0.004 microg/mL, respectively. The linear ranges were 0.050-30.0 microg/mL. Correlation coefficients in blood and urine were 0.999 and 0.998, respectively. The recoveries exceeded 80% both in blood and urine.CONCLUSION:
This method is applicable for quantification of paraquat in biological fluids.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Paraquat
/
Boroidretos
/
Cromatografia Gasosa
/
Níquel
Tipo de estudo:
Diagnostic_studies
Limite:
Humans
Idioma:
Zh
Revista:
Fa Yi Xue Za Zhi
Ano de publicação:
2008
Tipo de documento:
Article