原子吸收光譜法測(cè)定玻璃白酒瓶中鉛遷移量的不確定度評(píng)定

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摘 要：采用原子吸收光譜法測(cè)定玻璃白酒瓶中鉛遷移量，通過(guò)建立數(shù)學(xué)模型，分析測(cè)量過(guò)程中的不確定度來(lái)源，對(duì)測(cè)量不確定度進(jìn)行評(píng)定。結(jié)果表明，當(dāng)白酒瓶中鉛遷移量為1.35 mg·L-1時(shí)，擴(kuò)展不確定度為

0.12 mg·L-1（k=2），其中標(biāo)準(zhǔn)曲線擬合引入的不確定度對(duì)測(cè)量結(jié)果的影響較大。

關(guān)鍵詞：原子吸收光譜法；玻璃白酒瓶；鉛遷移量；不確定度

Evaluation of Uncertainty in Determination of Lead Migration in Glass Baijiu Bottles by Atomic Absorption Spectrometry

ZHANG Sha， WANG Yongqing， SU Yin

（Qixian Comprehensive Inspection and Testing Center （National Glassware Product Quality Supervision and Inspection Center）， Jinzhong 030900， China）

Abstract： The migration amount of lead in glass Baijiu bottles was determined by atomic absorption spectrometry. The uncertainty sources in the measurement process were analyzed by establishing a mathematical model， and the measurement uncertainty was evaluated. The results show that the expanded uncertainty is 0.12 mg·L-1

（k=2） when the migration amount of lead in the Baijiu bottle is 1.35 mg·L-1， and the uncertainty introduced by standard curve fitting has a greater impact on the measurement results.

Keywords： atomic absorption spectroscopy; glass Baijiu bottle; lead migration amount; uncertainty

白酒是我國(guó)特有的一種傳統(tǒng)酒精飲料，以其悠久的文化精神、獨(dú)特的口感香味，深受廣大消費(fèi)者歡迎。（剩余3934字）