Application Notes
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Study of Residual Solvents in Various Matrices by Static Headspace

United States Pharmacopeia (USP) chapter <467> is a widely used method for identifying and quantifying Organic Volatile Impurities (OVI) used in the production of pharmaceuticals. Many of these OVIs, also known as residual solvents, are known or potential carcinogens and must be monitored due to the risks they pose to consumers and the environment. For this study, VOC data will be presented for a variety of matrices using static headspace and GC/FID, following the guidelines of USP <467>.

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Western technical traditions of pottery making in Tang Dynasty China

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.

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Determination of Trace Elements in Copper by Radially Viewed ICP

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.

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Determination of the Halogen Elements in the Deep UV Region of the Spectrum by ICP

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.

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Determination of Alloying Elements in High Carbon Steel by Radially Viewed ICP

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.

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Chemical and lead isotope analysis of some lead-barium glass wares from the Warring States Period

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.

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Chemical analysis of white porcelains from the Ding Kiln site, Hebei Province, China

The Ding kilns were some of the most famous early kilns of medieval China, producing huge quantities of white and cream-white porcelains of outstanding technical and aesthetic quality. Since 1949 they have been excavated three times, in 1965, in 1987, and in 2009 respectively.

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Analysis of Stainless Steel by Dual View ICP

Stainless steels are a corrosion resistant family of iron alloys that have a minimum of 10.5% Chromium. Their corrosion resistance is largely due to the formation of a passive chromium (III) oxide (Cr2O3) layer, approximately 1 to 5 nanometers (nm) thick, on the surface of the steel. If this layer is damaged by cutting, scratching or abrasion, it will regenerate, provided sufficient oxygen is available.

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Analysis of Lead-Based Paint using Prodigy High Dispersion ICP

Lead-based paints have been used extensively for painting the interior and exterior surfaces of homes. These paints were applied to almost any surface; however, they were most commonly found on interior and exterior woodwork including: doors, window frames and windowsills, cupboards and interior moldings.

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Introduction to the Fusion TOC Analyzer

Building on nearly 40 years of design and manufacturing experience, Teledyne Tekmar introduces its fifth generation Total Organic Carbon (TOC) UV/Persulfate analyzer, The Fusion. The Fusion offers increased flexibility, software intelligence and user-friendliness making this analyzer ideally suited for demanding laboratory needs.

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