需要金幣： 1000 個金幣 |
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| 轉(zhuǎn)換比率：金額 X 10=金幣數(shù)量， 例100元=1000金幣 | 論文字?jǐn)?shù)：8652 |  | |
| 折扣與優(yōu)惠：團(tuán)購最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘要：采用火焰原子吸收分光光度法來測定日用陶瓷中鉛、鎘的溶出量以及浸泡時間長短對溶出量的影響。結(jié)果表明：Pb和Cd的檢出限分別為0.5076 μg/mL和0.9328 μg/mL，回收率分別為104.13%和101.23%，精密度為2.27%和1.01%。該方法靈敏度準(zhǔn)確、快速、檢出限低，具有良好的精密度和準(zhǔn)確度，適合用于實驗室中微量鉛、鎘溶出量的測定。 關(guān)鍵詞：火焰原子吸收分光光度法；日用陶瓷；鉛；鎘
Abstract:The contents of Pb and Cd in domestic ceramic was determined by flame atomic spectrometry. The result showed that the limits of detection of Pb and Cd were 0.5026 μg/mL and 0.0095 μg/mL respectively. The reccoveries were 104.13% (Pb) and 101.23% (Cd) and RSDs were 2.27%(Pb) and 1.01%(Cd)，respectively. The method was sensitive, accurate,rapid and low actection limits, and suitable for trace Pb and Cd examination in laboratory. Key words: flame atomic absorption spectrometry; domestic ceramic; Lead; Cadmium
目前，陶瓷器皿中鉛、鎘溶出量的測定方法有分光光度法、示波極普法、原子熒光法、陽極溶出伏安法、原子吸收法等[5-8]。原子吸收法具有較高的靈敏度，精密度高，檢出限低，選擇性好，主要針對單元素的分析，是我國目前測定單一重金屬含量的最主要的方法[8]。所以本實驗設(shè)計采用火焰原子吸收分光光度法來測定日用陶瓷中鉛鎘的溶出量。 |
