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題 名 | Investigation of Zn, Cu, Cd and Hg Concentrations in the Oyster of Chi-ku, Tai-shi and Tapeng Bay, Southwestern Taiwan=臺灣地區之臺西、七股及大鵬灣產牡蠣的鋅、銅、鎘及汞含量之探討 |
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作 者 | 陳志遠; 陳孟仙; | 書刊名 | 藥物食品分析 |
卷 期 | 11:1 2003.03[民92.03] |
頁 次 | 頁32-38+74 |
分類號 | 412.37 |
關鍵詞 | 基礎背景值; 鋅; 銅; 鎘; 汞; 夏季最低值; 養殖牡蠣; 七股; 臺西; 大鵬灣; 臺灣; Baseline; Zinc; Copper; Cadmium; Mercury; Summer minimum; Cultured oyster; Chi-ku; Tai-shi; Tapeng bay; Taiwan; |
語 文 | 英文(English) |
中文摘要 | 本研究是在1996至2001年間進行依季別自台西、七股及大鵬灣採集當地養殖的牡蠣,總共分析了155個樣品。結果發現牡蠣體內所舍之鋅、銅、鎘及汞濃度有地點的差異及季節變化。本研究的牡蠣呈現與前人研究相似的現象,呈現冬季高,夏季低之重金屬濃度的季節變化。三個地點中,最高的鋅、銅及鎘測值出現在台西三月的樣品,而汞則出現在七股元月的樣品。總體而言,三個養殖區的牡蠣所含的鋅、銅、鎘及汞的總平均值及標準偏差分別為860 ± 375、267 ± 193、0.954 ± 0.484及0.097 ± 0.056 mg/kg乾重,與世界其他未受污染地區的牡蠣測值相似,同時,除銅高出1.8倍外,其他三元素亦與1970年代雲嘉養殖區的牡蠣測值相類似。將這些乾重測值經鮮重比乾重為6.8:1換算後,亦皆較世界各國所訂之食品安全限值為低,顯示無食用之安全顧慮。然而,在本季仍會有偶發性牡蠣銅含量 (1115 mg/kg乾重) 過高的情形,因此籲請相關食品衛生管理單位應盡速擬訂管理辦法,以保障消費者的健康。 |
英文摘要 | Metal concentrations in oyster, Crassostrea gigas, were investigated using 155 samples collected seasonally during 1996-2001 from the Chi-ku, Tai-shi, and Tapeng Bay areas in southwestern Taiwan. Seasonal variations as well as site difference were identified in the metal concentrations. The metal concentrations of oyster in southwestern Taiwan indicated a typical seasonal pattern of “winterspring maximum” and “summer minimum”. Among the three sites, Zn, Cu and Cd contents were found to be the highest in the March sample from Tai-shi, whereas Hg level was found to be the highest in the January sample from Chi-ku. The overall mean concentrations of Zn, Cu, Cd and Hg sampled from the three sites were 860 ± 375, 267 ± 193, 0.954 ± 0.484 and 0.097 ± 0.056 mg/kg dry wt., respectively, representing the baseline metal concentrations of oyster in Taiwan. In comparison with the 1970’s survey, except the 1.8- fold increase in Cu, the other three elements were within the same ranges. After the transformation of the dry-weight-base data into flesh-weight-base data based on a ratio of 6.8 to1, the mean metal levels, for the most part, closely agreed with many international food standards. However, extraordinarily high level of Cu (1115 mg/kg dry wt.) in oyster were found occasionally in wintertime. Therefore, it is strongly suggested that regulations with respect to food safety standards of metal concentrations need to be established as soon as possible. |
本系統中英文摘要資訊取自各篇刊載內容。