产品样本应用文章
使用北京大学科技考古实验室的激光剥蚀电感耦合等离子体发射光谱分析了台湾省出土的18 件古代玻璃珠子标本，结果表明这些珠子主要属于钙镁玻璃系统、钾玻璃系统、铅玻璃系统以及钠钙玻璃系统，除钠钙玻璃以外其它玻璃的制作技术均和同时期在大陆流行的玻璃制作技术同源。而成分分析结果显示钠钙玻璃可能来自印度或者东南亚,说明中古时期台湾岛是“海上丝绸之路”的重要中转站。
石脑油通常作为汽轮机的燃料。如果石脑油中的杂质元素含量过高，将会缩短汽轮机的使用寿命。本文采用水平观测ICP 建立了对石脑油中微量杂质的分析方法。
采用激光剥蚀电感耦合等离子体发射光谱技术分析了湖南沅水流域楚墓出土的11件玻璃璧和2件蜻蜓眼珠的化学成分，并对化学成分进行了多元统计分析。结果表明：这些玻璃器都属于铅钡硅系玻璃，是战国时期重要的一种国产玻璃。玻璃璧的来源单一，而蜻蜓眼则为不同来源。与其它已经发表的铅钡玻璃璧的数据进行比较，显示湖南南部在战国时期可能是当时主要的铅钡玻璃璧生产中心。同时探讨了不同颜色玻璃的呈色机理。结果表明，古代楚国工匠可能通过调整玻璃中铅钡硅含量的比例来控制玻璃的酸碱度，从而得到预期的玻璃颜色。
飞灰中含有大量的金属杂质，是大气污染的主要来源，因此对飞灰的检测对环境保护就显得格外重要。本文采用ICP-OES（Prodigy Leeman Labs）对飞灰中金属杂质进行了系统分析，分析结果与NIST SRM 1633b 标准样品比较，结果优良。
全谱ICP固体检测器主要的特征是具备一次测定未知样品中所有元素，也即元素“指纹”谱图。此技术在QC及仲裁方面具有强大的功能。为实现“指纹”功能，要求ICP全波长覆盖及对应的全谱数据处理功能。本文将描述Prodigy ICP有关元素“指纹”技术的性能。
This study is based on the SEM-EDS and LA-ICP-AES analyses of a sample of twenty-nine Tang sancai sherds unearthed from the Liquanfang site, Xi’an city. The results indicate that ceramics with yellowish bodies are calcareous and those with red bodies were made of ferruginous clays.
Copper is considered to be the first metal used by man and has been mined for more than 10,000 years. Since copper is a soft, malleable metal, early civilizations learned to fashion tools, containers, ornaments and weapons from it. Once it was discovered that the addition of a small amount of tin to molten copper produced an alloy that was harder than copper, the Bronze Age had begun.
There are many applications where the ability to measure the halogen elements, at the same time as the metallic elements, is desirable. A few of these include the measurements of Cl and Br in refinery process fluids, the measurement of Cl and Br in waste oils and the determination of Cl-, Br- and I- in food supplements and drinking water.
Carbon steels are by far the most frequently used steels. More than 85% of the steel produced in the US is carbon steel. These steels are classified by their carbon content. Table 1 shows the classification of carbon steels and some typical uses.
In the context of the present study, we have conducted chemical and lead isotope analyses on twelve ancient glass samples unearthed from Chu tombs in Changde City, Hunan Province. The results of the chemical analysis of these samples show that all samples are PbOeBaOeSiO2 glasses, thus indicating that they are all traditional ancient Chinese glasses. The chemical results also suggest that all Bi wares may either share a common source or were produced according to similar recipes. In turn, the eye beads are different from the Bi wares for their distinct chemical composition.
