Hello everyone,
I am actually dealing with heavy metal in shark meat and vertebrae, water and sediment. I intend to collect these samples for one year before to process to the appropriate analyses. The analyses will be carried out in France using ICP-MS and by the way lead (Pb) isotope signature will be measuring. Due to shipping cost, I might not be able to be sending after each campaign the samples directly to the lab, this challenges my work. Therefore, I am seeking a protocol to store the samples until they be analyzed.
Can someone suggest a protocol for such storage?
For how long can I keep my samples even if I apply a known protocol for sample preservation on the field (adding of nitric acid to deplete the pH
In metal analysis, contamination is the main source of errors. Avoid using glass containers to store your samples, use containers made from polyethylene or other inert material like teflon. Prior to use, the washing of these containers must be done with nonionic detergents (sulfate-free) followed by thorough rinsing. As a practice, rinse ten times (10x) with deionised water.
Acidify your samples to pH 2 with HNO3 and store in Teflon material. This will be stable for 6 months.
In metal analysis, contamination is the main source of errors. Avoid using glass containers to store your samples, use containers made from polyethylene or other inert material like teflon. Prior to use, the washing of these containers must be done with nonionic detergents (sulfate-free) followed by thorough rinsing. As a practice, rinse ten times (10x) with deionised water.
Acidify your samples to pH 2 with HNO3 and store in Teflon material. This will be stable for 6 months.
Store your samples at 4 OC, in teflon container and at a pH value of less than 2.
am agreed with Mathias Chia
for more details of water sampling you can refer APHA Book, Standard methods for water and waste water analysis
Hello everyone,
Thank you for sharing your knowledge. It really appreciated.
I'm still expecting something about the storage and conservation of Heavy metals in sharks' tissue and vertebrae and, the sediment.
Many thanks.
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