[Determination of dimethyl ether in workplace air with gas chromatography].

OBJECTIVE

To develop determination of dimethyl ether in workplace air by GC.

METHODS

Dimethyl ether were sampled with solvent desorption active carbon tube. The sampled carbon tube were desorbed by carbon tetrachloride, Elite-WAX column was used with temperature programmed from 40 to 90 degrees C, and the carrier gas programmed from 1.4 - 2.5 ml/min.

RESULTS

There was a good linearity (r = 0.9999) over the concentration of 0-63.91 microg/L, detection limit can reach 0.75 microg/ml.

CONCLUSION

This method proved to be accurate and sensitive, to meet the determination of the dimethyl ether in workplace air.