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題 名 | 牙膏和牙粉中重金屬的測定方法之研究 |
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作 者 | 王來好; 張朝明; | 書刊名 | 技術學刊 |
卷 期 | 5:1 1990.03[民79.03] |
頁 次 | 頁91-94 |
分類號 | 412.36 |
關鍵詞 | 牙粉; 牙膏; 重金屬; 測定; |
語 文 | 中文(Chinese) |
中文摘要 | 本篇以原子吸光法和方波陽極剝時伏安法(square wave anodic stripping voltammetry SW-ASV)測定十四種國內外廠牌牙膏試樣中的鋅、鎘、鉛和銅。原子吸光法對鋅、鎘、鉛和銅的偵測極限(detection limit) 分別為4.2ppb、7.6ppb、34.0ppb、16.0ppb。而方波陽極剝除伏安法對鋅、鎘鉛和銅分別為0.2ppb、0.5ppb、0.2ppb、0.2ppb。此兩種方法之比較,方波陽極剝除伏安法之優點是靈敏度高且可同時測得鋅、鎘、鉛和銅;而原子吸光注每次只能測得一種元素。實驗結果顯示十四種牙膏試樣中皆含有銅,而多數試樣,同時含有鉛、鎘,而十四種試樣中僅有一種合鋅。 |
英文摘要 | AA (Atomic Absorption Spectrophotometry) and SW-ASV (Square Wave Anodic Stripping Voltammetry) methods were used for the determina-tion of Zn, Cd, Pb, and Cu in fourteen commercial tooth paste and powder products. The detection limits are Zn (4.2 ppb), Cd (7.6 ppb), Pb (34.0 ppb), and Cu (16.0 ppb) for the AA method, while Zn (0.2 ppb), Cd (0.5 ppb), Pb (0.2 ppb), and Cu (0.2 ppb) for the SW-ASV method. Besides the higher sensitivity, the above mentioned heavy metals can be determined simultaneously in the SW-ASV method, while each element must be determined separately in the AA method. The results showed that all of the fourteen samples contained copper. Lead and cadmium were also found in most samples, and zinc was found only in one sample. |
本系統中英文摘要資訊取自各篇刊載內容。