ASTM D7623
Standard Test Method for Total Mercury in Crude Oil Using Combustion-Gold Amalgamation and Cold Vapor Atomic Absorption Method
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About This Item
ASTM D7623 is the standard test method for determining total mercury in crude oil using combustion-gold amalgamation and cold vapor atomic absorption. It provides a defined approach for measuring mercury at low levels in a complex hydrocarbon matrix, which is important because mercury can affect handling, processing, equipment integrity, and downstream compliance decisions. As an ASTM standard, it supports more consistent laboratory testing and reporting for crude oil evaluation.
Purpose of ASTM D7623
The purpose of ASTM D7623 is to describe a standardized method for total mercury analysis in crude oil. By combining combustion-gold amalgamation with cold vapor atomic absorption, the method is designed to support reliable measurement of mercury content in a sample that would otherwise be difficult to analyze directly. This technical framework helps laboratories apply a consistent test procedure, improving comparability of results across quality control, procurement, and specification-related testing.
Common use cases of ASTM D7623
ASTM D7623 is commonly used in laboratory testing of crude oil when mercury content needs to be assessed for operational or commercial reasons. It is relevant in workflows that support crude oil acceptance, characterization, and monitoring before processing or transfer. The method is also useful in analytical settings where trace-level mercury measurement is part of routine product evaluation or compliance documentation. In these contexts, ASTM D7623 helps provide a repeatable basis for results.
Why ASTM D7623 matters
This standard matters because mercury in crude oil can create technical, environmental, and commercial concerns if it is not measured consistently. ASTM D7623 helps reduce uncertainty by giving laboratories a recognized test method that supports quality control and more dependable decision-making. For buyers, sellers, and testing organizations, a clear ASTM standard can improve confidence in reported results, simplify specification checks, and support risk reduction throughout crude oil handling and evaluation.
- Mercury measurement in crude oil
- Combustion-gold amalgamation analysis
- Cold vapor atomic absorption detection
- Laboratory quality control and reporting
- Crude oil evaluation for compliance
- Publication Date: 2020-12-17
- Publisher: ASTM
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