Abstract A simplified method of sulfur determination in asphalt with Laser-Induced Breakdown Spectroscopy on S I 921.29 nm line is presented. Helium at atmospheric pressure was employed in the interaction chamber. Calibration standards were prepared by hand mixing and homogenizing a cellulose or limestone powder with a precise amount of sodium sulfate. Calibration pellets were pressed out and used for quantitative bulk analysis of four asphalt samples. Sulfur content from Inductively Coupled Plasma triple Quadrupole Mass Spectrometry analysis was taken as a reference. The yielded results from the limestone calibration set should be empirically corrected to the microplasma emission which is different from that of cellulose. However, the use of cellulose pellets led directly to true results within experimental uncertainty. Despite evident differences between cellulose and asphalt, there are some hidden factors interconnecting organic matrices and setting mineral ones apart.

中文翻译：

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沥青激光诱导分解光谱分析的校准标准

摘要 提出了一种在 SI 921.29 nm 谱线上采用激光诱导分解光谱法测定沥青中硫的简化方法。在相互作用室中使用大气压下的氦气。校准标准品的制备方法是将纤维素或石灰石粉末与精确量的硫酸钠进行手动混合和均质化。校准颗粒被压出并用于四种沥青样品的定量散装分析。来自电感耦合等离子体三重四极杆质谱分析的硫含量被用作参考。石灰石校准集产生的结果应根据经验校正到不同于纤维素的微等离子体发射。然而，纤维素颗粒的使用直接导致了实验不确定性内的真实结果。