Metals: analytical methods, detection limits, and holding times - USEPA/SuRGE GitHub Wiki

Background

Dissolved metals are measured via ICP at CIN. The analysis quantified 24 analytes. All SuRGE field crews send metals samples to CIN. Metals were not collected during the 2018 R10 sampling.

Detection Limits

Analyte detection limits (dl) are reported in the first row of the TTEB data files. Reporting limits are taken as the lowest standard and were provided via email by Eugenia Riddick [9/30/2022, 10/5/2022, 10/6/2022].

Analyte Names and Units

Please note that the analyte names and units used below are consistent with the SuRGE chemistry data objects, but may differ from those in the data files provided by the laboratories. See Wiki page Chemistry units, names, and data sources for the official list of analyte names and units to be used in the SuRGE data objects.

Analyte	Analyte Container and volume	Analytical method	Year	Detection limit	Reporting limit	Preservation and Holding times	Lab
al	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.004 mg_l	0.5 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN
as	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.004 mg_l	0.5 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN
ba	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.001 mg_l	0.5 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN
be	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.005 mg_l	0.5 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN
ca	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.010 mg_l	0.5 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN
cd	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.0003 mg_l	0.5 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN
cr	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.001 mg_l	0.5 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN
cu	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.001 mg_l	0.5 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN
fe	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.001 mg_l	0.5 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN
k	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.3 mg_l	0.5 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN
li	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.005 mg_l	0.5 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN
mg	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.005 mg_l	0.5 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN
mn	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.001 mg_l	0.5 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN
na	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.03 mg_l	0.5 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN
ni	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.001 mg_l	0.5 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN
pb	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.002 mg_l	0.5 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN
p	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.005 mg_l	20.0 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN
sb	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.003 mg_l	0.5 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN
si	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.020 mg_l	4.0 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN
sn	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.001 mg_l	2.0 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN
sr	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.001 mg_l	0.5 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN
s	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.003 mg_l	20 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN
v	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.001 mg_l	0.5 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN
zn	A single 60 mL bottle for all 24 analytes.	Atomic absorption spectroscopy	All	0.0005 mg_l	0.5 mg_l	Acidified with double distilled nitric acid (16N) to pH < 2 and stored at room temperature.	CIN