Study on the determination of trace methyl mercury in seawater by gas chromatography

Sample seawater containing trace methyl mercury was acidified and adsorbed on hydrosulfo-cotton, washed with hydrochloric acid, extracted by benzene and dried, and then determined by a gas chromatograph with electron capture detector. This method, which can detect a minimum concentration of 0.1×10⁻¹⁰%, can be used to monitor the 10⁻¹⁰% content of methyl mercury in seawater.