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Measuring multimodal size distributions of aquatic colloids at trace concentrations
Many applications in research as well as industry require a highly sensitive detection of particulate matter in water or process liquids. We present a technique to measure the distribution of colloid sizes between 20 and 100 nm in situ at ultratrace concentrations. The method is based on laser-induc...
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Published in: | Applied physics letters 2004-12, Vol.85 (26), p.6329-6331 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Many applications in research as well as industry require a highly sensitive detection of particulate matter in water or process liquids. We present a technique to measure the distribution of colloid sizes between 20 and
100
nm
in situ
at ultratrace concentrations. The method is based on laser-induced breakdown detection, which has been applied for trace detection of colloids and determination of the weighted mean size. Using a refined method of data evaluation, we are now able to measure the number density of inorganic colloids in six size classes between 20 and
100
nm
simultaneously below ppb concentration. |
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ISSN: | 0003-6951 1077-3118 |
DOI: | 10.1063/1.1842359 |