Synthetic Organic Contaminants – Drinking Water
Procedure: EZZ0072A
Synonym(s): | Synthetic Organic Contaminants in Water |
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Requisition Form | G-22 |
Test Description | Synthetic organic contaminants group 5, EPA methods 508.1 and 525.2, Semi-volatile organic compounds by GC-MS and chlorinated pesticides and PCBs by GC-ECD in drinking water |
Pre-Approval Needed | N/A |
Supplemental Information Required | N/A |
Supplemental Form(s) | N/A |
Performed on Specimens from (sources) | Environmental |
Sample/Specimen Type for Testing | Drinking Water |
Minimum Volume/Size Required | Narrow-mouth (or wide mouth) amber glass with Teflon (PTFE) cap liner; 1 quart (1 L) |
Storage/Preservation Prior to Shipping |
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Transport Medium | N/A |
Specimen Labeling |
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Shipping and Specimen Handling Requirements |
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Method | EPA 508.1 & 525.2 |
Turn-around Time | Samples must be extracted by the lab within 14 days of collection. |
Interferences/Limitations |
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Common Causes for Rejection | Insufficient quantity, unacceptable specimen type or source, improper shipping conditions, expired media or collection container, discrepancies between specimen label and submission form, and/or incomplete or missing submission form |
Additional Information |
1) Laboratory QC duplicates are required for samples. One in ten samples should be collected in triplicate. For the sample to be triplicated, add the words “+DUP” The sample and duplicates will be submitted with only one analysis form. 2) If the chlorine residual is >5 mg/L, additional dechlorinating agent is required. For every mg/L of chlorine above the initial 5 mg/L add an additional 10 mg of Na2SO3. For example: a sample with 7 mg/L chlorine would require 70 mg of Na2SO3. Be careful not to add too much Na2SO3 to the sample because this may cause interference in the analysis. 3) If you must collect a confirmation sample for prometon, you will NOT add the acid. Ensure the submission form is labeled well stating “PROMETON, NO ACID”. Contact the laboratory at (512) 776-7587 for currently supported analyte list. |