Concept
Leco AMA 254 Advanced mercury analyser
| URI | http://vocab.nerc.ac.uk/collection/L22/current/TOOL2144/ | ||
|---|---|---|---|
| Within Vocab | SeaVoX Device Catalogue | ||
| Alternative Labels | Leco AMA254 | ||
| Definition | The AMA254 advanced mercury analyser is an atomic absorption spectrometer (AAS) designed to determine total mercury content in solids and liquids without pre-treatment or pre-concentration. Samples are decomposed using combustion (approximately 750 degC). The gases are pased through catalytic compounds and impurities are removed. Gold-plated ceramics collect the mercury vapour which is then heated to 900 degC and released to the detection system. The vapour passes through the cuvette and is detected by the AAS. The AAS uses a lamp that emits at a wavelength of 253.7nm, and a silicon UV diode detector. The instrument range at 100 mg is 0.5 ppb to 5 ppm, with a precision of 0.25 ppb or <5 % relative standard deviation. It works with nominal sample sizes of 100 mg of solids and 100 ul of liquids. It requires environmental conditions of 0 to 35 deg C and humidity between 20 and 80 %. | ||
| Date | 2025-03-26T11:59:16 | ||
| Identifier | SDN:L22::TOOL2144 | ||
| Note | accepted | ||
| Has Current Version | 2 | ||
| Version | 1 | ||
| version | 2 | ||
| inScheme | http://vocab.nerc.ac.uk/scheme/SDNDEV/current/ | ||
| Broader | |||
| L05 SeaDataNet device categories - (2) | |||
| Related | B75:ORG02099 |
LECO Corporation | Mapping: 2089650 |
L35:MAN0327 |
LECO Corporation | Mapping: 2089653 | |
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