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Detecting hexamethylene diamine in workplace air by high performance liquid chromatography / 中国职业医学
China Occupational Medicine ; (6): 377-380, 2018.
Artículo en Chino | WPRIM | ID: wpr-881713
ABSTRACT

OBJECTIVE:

To establish a method for detecting hexamethylene diamine in workplace air by high performance liquid chromatography( HPLC).

METHODS:

Hexamethylene diamine in the workplace air was collected by silica gel tube,and each was added with a concentration of 0.05 mol/L sodium bicarbonate solution,each with 0.60 mL of dansyl chloride solution( a mass concentration of 240.00 mg/L),and the volume was adjusted to 5.00 mL with acetonitrile,heating for 40.00 min in bath water,acetonitrilewater( 7525,V/V) as the mobile phase,quantitated by the standard curve method,using HPLC for determinationstandard.

RESULTS:

The linear range of hexamethylene diamine was 0.040 0-6.000 0 mg/L,the correlation coefficient was 0.999 3,and the detection limit was 0.003 8 mg/L,and the minimum detection concentration was 0.002 5 mg/m~3( calculated by sample volume of 3.0 L); The within-run relative standard deviation( RSD) was 2.1%-3.0%,and the between-run RSD was 2.9%-3.6%.The average desorption efficiency of the method was 91.4%-94.1%.The sampling efficiency was 98.5%-99.6%.

CONCLUSION:

The method is simple,rapid,sensitive,accurate and suitable for the detecting hexamethylene diamine concentration in workplace air.

Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Idioma: Chino Revista: China Occupational Medicine Año: 2018 Tipo del documento: Artículo

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Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Idioma: Chino Revista: China Occupational Medicine Año: 2018 Tipo del documento: Artículo