Domestic polymeric microbeads GDX-502 were used to concentrate benzene hydrocarbon from seawater. The absorbed benzene hydrocarbon was removed by thermal desorption and directly injected into gas chromatograph and det...Domestic polymeric microbeads GDX-502 were used to concentrate benzene hydrocarbon from seawater. The absorbed benzene hydrocarbon was removed by thermal desorption and directly injected into gas chromatograph and determined by FID detector. It was optimal for the rapid and precise determination of trace benzene hydrocarbon in seawater. In this Paper the investigation of benzene hydrocarbon in the coastal water of Jiaozhou Bay (Qingdao) is reported as well. The data for benzene hydrocarbon are listed in table 3 for 1984 and the station locations are given in figure 6.展开更多
Trare amounts of benzene hydrocarbons obtained in Jiaozhou Bay （Qindao） were enriched bysorption on a GDX-102 column and eluted by carbon disulfide. The eluted was concenttaled and then de-temened by capillary colum...Trare amounts of benzene hydrocarbons obtained in Jiaozhou Bay （Qindao） were enriched bysorption on a GDX-102 column and eluted by carbon disulfide. The eluted was concenttaled and then de-temened by capillary column gas cbornatognphy.The contents of virious kinds of benzene hydrocarbons in Jiaozhou Bay coastal water were benzene（22.3-141.6）× 10～（-9）g/L, toluate （15.2-94.0） × 10<sup>-9</sup> g/L, ethyl benzene（11.8-85.1）×10<sup>-9</sup> g/L, p -xylene（15.2-78.5） ×10（-9） g/L, m-xylene （10.9-79.4） ×10（-9） g/L, o -xylene （12.4-80.1） x ×10（-9）g/L; iso-propyl（8.4- 73.1） x ×10（-9）g/L, n -propyl （6.9-76.4） ×10（-9） g/L, 1, 3, 5-trimethylbenzene （10.9- 35.9）×10（-9） g/L, 1,2, 4-trimethybenzene （10.0- 38.0）×10（-9） g/L, n - butydriare （8. 1 - 34.6） ×10（-9）g/L. The recovery of benzenehydrocarbons was （85.1 -95.6）%.展开更多
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 ...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.展开更多
文摘Domestic polymeric microbeads GDX-502 were used to concentrate benzene hydrocarbon from seawater. The absorbed benzene hydrocarbon was removed by thermal desorption and directly injected into gas chromatograph and determined by FID detector. It was optimal for the rapid and precise determination of trace benzene hydrocarbon in seawater. In this Paper the investigation of benzene hydrocarbon in the coastal water of Jiaozhou Bay (Qingdao) is reported as well. The data for benzene hydrocarbon are listed in table 3 for 1984 and the station locations are given in figure 6.
文摘Trare amounts of benzene hydrocarbons obtained in Jiaozhou Bay （Qindao） were enriched bysorption on a GDX-102 column and eluted by carbon disulfide. The eluted was concenttaled and then de-temened by capillary column gas cbornatognphy.The contents of virious kinds of benzene hydrocarbons in Jiaozhou Bay coastal water were benzene（22.3-141.6）× 10～（-9）g/L, toluate （15.2-94.0） × 10<sup>-9</sup> g/L, ethyl benzene（11.8-85.1）×10<sup>-9</sup> g/L, p -xylene（15.2-78.5） ×10（-9） g/L, m-xylene （10.9-79.4） ×10（-9） g/L, o -xylene （12.4-80.1） x ×10（-9）g/L; iso-propyl（8.4- 73.1） x ×10（-9）g/L, n -propyl （6.9-76.4） ×10（-9） g/L, 1, 3, 5-trimethylbenzene （10.9- 35.9）×10（-9） g/L, 1,2, 4-trimethybenzene （10.0- 38.0）×10（-9） g/L, n - butydriare （8. 1 - 34.6） ×10（-9）g/L. The recovery of benzenehydrocarbons was （85.1 -95.6）%.
文摘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.
