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Nippon Instruments Corporation Publishes Method for Measurement of Total Mercury in Cork Stoppers Using Direct Mercury Analysis
  • USA - English


News provided by

Rigaku

Aug 07, 2017, 04:00 ET

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MA-3000 Direct thermal decomposition mercury analyzer
MA-3000 Direct thermal decomposition mercury analyzer

Osaka, Japan (PRWEB) August 07, 2017 -- Nippon Instruments Corporation (NIC) has published a new application report describing the measurement of mercury (Hg) in cork stoppers by thermal decomposition using atomic absorption spectroscopy. The method described in the report complies with US EPA Method 7473, Mercury in Solids and Solutions by Thermal Decomposition, Amalgamation, and Atomic Absorption Spectrophotometry.

NIC Application Note MA-3A-CA-101, Total Mercury in Cork Stoppers Using Direct Mercury Analysis, includes information about calibration and measurement, and highlights the performance of the NIC MA-3000 direct thermal decomposition mercury analyzer.

In a 2014 study (Lopes, C.B., et al. Environ Sci Pollut Res (2014) 21: 2108), it was shown that cork used in wine stoppers is an effective biosorbent towards bivalent mercury at environmentally relevant concentrations and conditions. When cork is used to impede the passage of mercury, it is important to quantify the absorbed amount.

Wine corks are also recycled into other consumer products, where the mercury uptake from the wine may need to be quantified.

Mercury is dangerous to both natural ecosystems and humans because it is highly toxic, and poses a particular threat to human development in utero and in early childhood. To prevent mercury poisoning, it is often necessary to quantify total mercury in recycled cork and cork used intentionally for mercury remediation.

For the analysis described in the report, calibration was done using certified aqueous ionic-mercury standard solution diluted to the required concentration. Measurement was performed by the MA-3000 analyzer, a dedicated direct mercury analyzer that selectively measures total mercury by thermal decomposition, gold amalgamation and cold vapor atomic absorption spectroscopy on virtually any sample matrix. Rice flour was measured after all cork samples for reliability assurance.
The MA-3000 analyzer is designed to provide quick results without an elaborate, time-consuming sample preparation process. The results show that the instrument is able to analyze new cork samples with accuracy and precision.

A copy of this report may be requested at shar-nic(at)rigaku.co.jp

About Nippon Instruments Corporation

Nippon Instruments produces a broad line of Hg monitors suitable for surveying for vapor-phase elemental mercury in air, and elemental and mercury compounds including methylmercury, in gases, liquids and solids. Materials analyzed include fuels – coal, lignite, crude oil, natural gas; liquids such as waste, drinking and river water; incinerator stack gases; animal products; human tissue and blood and solid waste streams.

For further information, contact:

International Sales Division
TEL: +81- 726 94 5195
shar-nic(at)rigaku.co.jp

Michael Nelson, Rigaku, https://www.rigaku.com/, +1 512 225-1796 Ext: 1017, [email protected]

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Nippon Instruments Corporation Publishes Method for Measurement of Total Mercury in Cork Stoppers Using Direct Mercury Analysis
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Nippon Instruments Corporation Publishes Method for Measurement of Total Mercury in Cork Stoppers Using Direct Mercury Analysis
MA-3000 Direct thermal decomposition mercury analyzer
MA-3000 Direct thermal decomposition mercury analyzer
Nippon Instruments Corporation Publishes Method for Measurement of Total Mercury in Cork Stoppers Using Direct Mercury Analysis MA-3000 Direct thermal decomposition mercury analyzer

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