[乙醇中14C自然含量的液体闪烁计数:不同标准化方法的比较[作者简介]。

S & TA & NU. Rivista di scienza e tecnologia degli alimenti e di nutrizione umana Pub Date : 1976-03-01

L Cecchi, G Volonterio, P Resmini

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引用次数: 0

摘要

研究了内标甲苯- 14c、十六烷- 14c和乙醇- 14c对乙醇样品低浓度14c测量中液体闪烁计数效率的影响。对许多生物和合成的乙醇样品进行了计数，用乙醇- 14c制成的淬火校准曲线进行外部标准化，得到了最好的结果。用甲苯- 14c进行淬火标定曲线的外标优于用乙醇- 14c进行内标。Hesadecane-14C作为内标给出的活度值高于真实值。

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[The liquid scintillation counting of the 14C natural level in ethanol: a comparison of different standardisation methods (author's transl)].

The influence on liquid scintillation counting efficiency of internal standards toluene-14C, hexadecane-14C and ethanol-14C has been studied for low level-14C measuring of ethanol samples. Many biological and synthetic samples of ethanol have been counted: the best results are obtained with external standardisation on quenching calibration curve made with ethanol-14C. External standardisation on quenching calibration curve made with toluene-14C is preferable to internal standardisation with ethanol-14C. Hesadecane-14C as internal standard gives activities rather higher than true values.

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S & TA & NU. Rivista di scienza e tecnologia degli alimenti e di nutrizione umana

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