台灣地區市售養殖魚類中重金屬含量之調查

SURVEY ON THE CONTENTS OF LEAD, COPPER CADMIUM, MERCURY AND ARSENIC IN AQUACULTURE FISH IN TAIWAN AREA

為了瞭解台灣地區市售養殖魚類受重金屬污染程度，本計畫於民國七十五年十月至七十六年三月間，就全省市售養殖魚類抽購檢體八十件（草魚二十六件、鰱魚二十七件、吳郭魚二十七件），利用感應耦合電漿─原子發射光譜分析儀（ICP-AES），分析魚肉中鉛、銅、鎘重金屬的含量，以原子吸光光譜儀測坤、汞之含量，經調查結果草魚之含量範圍分別為銅（0.36～1.59 ppm），鉛（N.D～0.70 ppm），鎘（1.51～49.38 ppb），砷（N.D～0.06 ppm），汞（N.D～0.12 ppm），吳郭魚之含量範圍分別為銅（0.28～2.80 ppm），鉛（0.09～0.74 ppm），鎘（22.86～85.23 ppb），砷（N.D～0.12 ppm），汞（N.D～0.12 ppm）、鰱魚之含量範圍分別為銅（0.29～1.03 ppm），鉛（N.D～0.67 ppm），鎘（24.79～59.39 ppb），砷（N.D～0.06 ppm），汞（N.D～0.16 ppm），經由變方分析顯示，草魚、吳郭魚、鰱魚間鉛、汞、砷、鎘的含量均有顯著差異（P<0.05），但銅則無險著差異（P>0.05），汞的含量均低於衛生署公告魚蝦類衛生標準 0.5ppm 以下，鉛、鎘、銅、砷之含量測定結果參照日本、加拿大等國家之容許限量，顯示國內養殖魚類金屬污染並不嚴重。

In order to understand heavy metal pollution of cultured fish in Taiwan, 80 Samples of Market fishes (26 grass fish. 27 SILVER CARP and BLG head, 27 TILAPIA) were collected from October 1986 to march 1987 o Contents of lead, Copper and Cadmium in fish were analyzed by ICP-AES (Inductively Coupled Plasma Atomic Emission spectrophotometry). Contents of mercury and Arsenic were analyzed by AAS (Atomic Absorption Spectrophotometry). Analytical results were as follows, in grass fish. Copper 0.36~ 1.59 ppm, Pb (N. D~0.70 ppm), Cd (1.51~49.38 ppb), As (N. D~0.057 ppm), Hg (N. D~0.12 ppm) in TILAPLA, Cu (0.28~2.80 ppm) Pb (0.09~074 ppm), Cd (22.86~85.26 ppb)、As (N. D~0.117 ppm), Hg (N. D~0.12 ppm) in SILVER CARP and BLG head, Cu (0.29~1.03 ppm), Pb (N. D~0.67 ppm), Cd (24.79~59 .39 ppb), As (N. D~0.056 ppm,) Hg (0.01~0.163 ppm), Acording to the analysis of variance, the contents of lead mercury, Arsenic and Cadmium in grass fish, TILAPIA SILVER CARP and BLG head were significantly different (P < 0.05), There was no Significant difference (P > 0.05) in copper. The content of mercury was below the allowed limit of mercury conternt in fish and shell fish, 0.5 ppm. The determined results of the contents of lead, Codmium, Copper. Arsenic were followed the allowed limits in Janpanese and Canada etc. So heavy metal pollution of AQUACULTURE fish in Taiwan is not serious.