流動注射-異煙酸-巴比妥酸法分光光度法測定氰化物的測量不確定度評定

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摘 要：利用流動注射-異煙酸-巴比妥酸法分光光度法測定地表水中的氰化物，依據(jù)數(shù)學(xué)模型和檢測過程的分析確定了測量不確定度的主要貢獻(xiàn)因子并進(jìn)行了評定，對測量結(jié)果明確了合理的表達(dá)方式。當(dāng)?shù)乇硭星杌锖繛?2.23 μg·L-1時，其擴(kuò)展不確定度為0.78 μg·L-1。

關(guān)鍵詞：流動注射-異煙酸-巴比妥酸法分光光度法；氰化物；測量不確定度

Evaluation of Measurement Uncertainty in the Determination of Cyanide by Flow Injection-Isonicotinic-Barbituric Acid Spectrophotometry

DONG Weibo

（Dezhou Rongxi Laboratory Equipment Co.， Ltd.， Dezhou 253000， China）

Abstract： Cyanide in surface water was determined by flow injection-isonicotinic-barbituric acid spectrophotometry. According to the analysis of mathematical model and detection process， the main contribution factors of measurement uncertainty were determined and evaluated， and the reasonable expression of measurement results was defined. When the cyanide content in surface water is 32.23 μg·L-1， its expanded uncertainty is 0.78 μg·L-1.

Keywords： flow injection-isonicotinic-barbituric acid spectrophotometry; cyanide; measurement uncertainty

測量不確定度能很好地表示被測量結(jié)果的分散程度，與測量結(jié)果密切相關(guān)，是以一個范圍或區(qū)間的形式表示，可適用于其所描述的所有測量值[1-3]。（剩余2298字）