Several experiments are performed to explore the possible benefits of using bamboo charcoal as a sample holder for rapid powder analysis using laser-induced breakdown spectroscopy at low-pressure helium ambient gas. Standard powdered samples such as ZnS and CuSO4 are used to demonstrate the feasibility of using cheap and widely available bamboo charcoal as a sample holder. A commercial baby milk powder and several sets of soil samples with a tiny amount of impurities are also introduced to show the potential application of bamboo charcoal as a powder holder. By appropriately adjusting the laser pulse energy and the thickness of the powder layer, we successfully obtained a spectrum that is free from the undesirable matrix effect. A remarkable result was obtained, even using a tiny amount of the powder sample. This proposed method is considered notably promising for the rapid analysis of the powder sample, especially with a very limited amount.

中文翻译：

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使用竹炭作为样品架，在低压环境氦气下使用激光诱导击穿光谱进行快速粉末分析

进行了几个实验，以探索使用竹炭作为样品架在低压氦环境气体下使用激光诱导击穿光谱进行快速粉末分析的可能好处。标准粉末样品如 ZnS 和 CuSO4 用于证明使用廉价且广泛可用的竹炭作为样品架的可行性。还介绍了一种商业婴儿奶粉和几组含有微量杂质的土壤样品，以展示竹炭作为粉末容器的潜在应用。通过适当调整激光脉冲能量和粉末层的厚度，我们成功地获得了没有不良基体效应的光谱。即使使用极少量的粉末样品，也获得了显着的结果。