Ultratrace Metals Analysis

Ultratrace Metals in Water - A Background to low level requirements.
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...
Wed, 6 Nov, 2019 at 11:43 AM
What are important considerations when collecting samples for low level metals analyses?
When collecting samples for ultratrace metals analyses, it is important to ensure that the samples that are ultimately analysed by the laboratory are repres...
Fri, 3 May, 2019 at 11:39 AM
What are appropriate sample containers for the determination of low level metals?
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...
Wed, 6 Nov, 2019 at 11:34 AM
Do I need to filter my water samples in the field for ultra trace metals analysis?
In general, surface waters are analyzed for total metals and groundwaters for dissolved metals.  Drinking waters must be analyzed for total metals.  In some...
Fri, 3 May, 2019 at 11:46 AM
Is it necessary to preserve water samples for ultratrace metals analyses?
Yes.   Preservation prevents precipitation and/or adsorption of metals between sampling and analysis For most metals, adding nitric acid (HNO3) to lower...
Fri, 3 May, 2019 at 12:00 PM
What is the minimum sample size required for low level metals analyses?
For metals, typical minimum sample requirements are 20 mL for waters.  Larger volumes are recommended to allow for Quality Control samples and repeats.  ...
Fri, 3 May, 2019 at 12:07 PM
What are the metals analysed at low levels and what are the typical detection limits reported?
Typical laboratory reporting limits for ultra trace metals range from parts-per trillion (ppt) to parts-per billion (ppb).  Table 2: Reporting Detection...
Wed, 6 Nov, 2019 at 11:42 AM
What are acceptable sample hold times for samples submitted for low level metals analysis in waters?
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...
Fri, 3 May, 2019 at 12:08 PM
Are there special sample collection procedures for low level metals?
Yes.   With low level metals analyses, there is an increased risk of sample contamination from extraneous sources.  To address this risk, the United Sta...
Fri, 3 May, 2019 at 12:19 PM