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Many metals, when dissolved in waters can be toxic to plants, animals and people.   Some metal compounds can be acutely toxic at very low levels. Others can...

When collecting samples for ultratrace metals analyses, it is important to ensure that the samples that are ultimately analysed by the laboratory are repres...

Sample containers for ultratrace metals analyses should be inert to the metals of interest.  Metals should not leach from the container, nor should any meta...

In general, surface waters are analyzed for total metals and groundwaters for dissolved metals.  Drinking waters must be analyzed for total metals.  In some...

Yes.   Preservation prevents precipitation and/or adsorption of metals between sampling and analysis For most metals, adding nitric acid (HNO3) to lower...

For metals, typical minimum sample requirements are 20 mL for waters.  Larger volumes are recommended to allow for Quality Control samples and repeats.  ...

Typical laboratory reporting limits for ultra trace metals range from parts-per trillion (ppt) to parts-per billion (ppb).  Table 2: Reporting Detection...

As a rule, it is ideal to analyse environmental samples as soon as possible after collection to minimize any changes to the sample or the parameters of inte...

Yes.   With low level metals analyses, there is an increased risk of sample contamination from extraneous sources.  To address this risk, the United Sta...