Mitkem Laboratories

Analytical Guide
Table 1 | Table 2 | Table 3

Table 1
Recommended Container, Preservation Techniques and Holding Times for SW-846 Analyses

Analytes	Method	Containers	Required* Volume	Preservation	Holding Times
Volatile Organics
Solid	8260B, 8021B, 5030B	Amber glass jar with Teflon lining	Minimal head- space in jar	4°C	14 days
Solid^a	8260B, 8021B, 5035	40mL vial or Encore with Teflon lining	5.0gram ± 0.5	4°C, unpreserved	48 hours
				DI Water -10 to -20°C	14 days
				Sodium bisulfate -10 to -20°C, 4°C	14 days
				Methanol 4°C	14days
Aqueous	8260B, 8021B, 5030B	40mL VOA Vials with Teflon septum	40mL	4°C HCl, pH<2	14 days
Semivolatile Organics
Solid	3540C, 3550B 8270C	Amber glass jar with Teflon lining	30gram	4°C	Extraction within 14 days Analysis within 40 days
Aqueous	3510C, 3520C 8270C	Amber glass bottles with Teflon lining	1L	4°C	Extraction within 7 days Analysis within 40 days
Polychlorinated Biphenyls
Solid	3540C, 3550B 8082	Amber glass jar with Teflon lining	30gram	4°C	Extraction within 14 days Analysis within 40 days
Aqueous	3510C, 3520C 8082	Amber glass bottle with Teflon lining	1L	4°C	Extraction within 7 days Analysis within 40 days
Organochlorine Pesticides
Solid	3540C, 3550B 8081A	Amber glass jar with Teflon lining	30gram	4°C	Extraction within 14 days Analysis within 40 days
Aqueous	3510C, 3520C 8081A	Amber glass bottle with Teflon lining	1L	4°C	Extraction within 7 days Analysis within 40 days
Chlorinated Herbicides
Solid	8151A 8151A	Amber glass jar with Teflon lining	30gram	4°C	Extraction within 14 days Analysis within 40 days
Aqueous	8151A 8151A	Amber glass bottle with Teflon lining	1L	4°C	Extraction within 7 days Analysis within 40 days
Total Petroleum Hydrocarbons Gasoline Range Organics
Solid	8015M, 5030B	Amber glass jar With Teflon lining	Minimal head- space in jar	4°C	14 days
Solid^a	8015M, 5035	40mL vial or Encore with Teflon lining	5.0gram ± 0.5	4°C, unpreserved	48 hours
				DI Water -10 to -20°C	14 days
				Sodium bisulfate -10 to -20°C, 4°C	14 days
				Methanol 4°C	14days
Aqueous	8015M, 5030B	40mL VOA vials With Teflon septum	40mL	4°C HCl, pH<2	14 days
Diesel Range Organics
Solid	3540C, 3550B 8015M	Amber glass jar with Teflon lining	30gram	4°C	Extraction within 14 days Analysis within 40 days
Aqueous	3510C, 3520C 8015M	Amber glass bottle with Teflon lining	1L	4°C H₂SO₄, pH<2	Extraction within 7 days Analysis within 40 days
Total Metals except Mercury and Chromium (VI)
Solid	3050B 6010B	Amber glass jar with Teflon lining	10g	4°C	180 days
Aqueous	3005A, 3010A	Polyethylene bottle	100mL	HNO₃, pH<2	180 days
Chromium (VI)
Solid	7196A	Amber glass jar with Teflon lining	10g	4°C	Digestion within 30 days Analysis within 96 hours
Aqueous	7196A	Polyethylene bottle	25mL	4°C	24 hours
Mercury
Solid	7471A	Amber glass jar	10g	4°C	28 days
Aqueous	7470A	Polyethylene bottle	100mL	4°C HNO₃, pH<2	28 days
Cyanide
Solid	9012	Amber glass jar with Teflon lining	1g	4°C	14 days
Aqueous	9012	Polyethylene bottle	50mL	4°C NaOH, pH>12	14 days
Flashpoint
Aqueous	1010	Amber glass bottle	30mL	4°C	28 days

* These represent minimum required volume. Additional sample volumes should be collected to minimize headspace loss for volatile analysis. Additional sample aliquot are also required to perform QA/QC functions (e.g. spikes, duplicates), % moisture for solid samples and sample re-analysis (if needed).

^a For Massachusetts analyses, the volatile soil samples are to be preserved in methanol in the field.