| 英文摘要 |
The purpose of this project is to examine the water quality of the pre-chosen 364 drinking water systems and 36 simple tap-water systems of the 25 municipal counties (or cities). The items being tested include heavy metals (As, Pb, Se, Cr, Cd, Ba, Sb, Ni, Hg, Ag ; In, Mo only tested at simple tap-water systems), volatile organics (trichoroethylene, carbon tetrachloride, 1,1,1-trichloroethane, 1,2-dichloroethane, vinyl chloride, benzene, 1,4-dichlorobenzene, 1,1-dichloroethene), fluoride, MBAS (only tested at drinking water systems) and THMs , a total of 21 to 22 items.
The analytical results indicates that most of the analytes were detected in some drinking water systems except carbon tetrachloride, 1,1,1-trichloroethane, 1,2-dichloroethane, benzene and 1,4-dichloro- benzene were found to be not detected in the systems. Most of the analytes were found in some simple tap water systems except trichloroethylene, 1,1,1-trichloroethane, 1,2-dichloroethane, vinyl chloride, benzene and 1,4-dichlorobenzene were found to be not detected in these systems. This annual, because of heavy metals detected by ICP-MS, detection limits were lower than ICP-OES, and so detected frequency was higher than past years. The results indicated that only one value of vinyl chloride at one site(TTW-J09) of Yun-Lin county and one value of THMs at one site(TTW-W04) of Lien-Chiang county which did not meet the regulation, the test results for rest of the items all in compliance which the drinking water quality standards.
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