VIMS Analytical Service Center for Nutrients: QC Limits and Detection

VIMS Analytical Service Center for Nutrients

Quality Control Limits^**

Analyte	MDL (mg/L)	Precision (mg/L) UCL	Accuracy (% Recovery) LCL	UCL
OP	0.0006	0.001	84	115
NO2	0.0002	0.002	81	113
NO2+3	0.0008	0.003	90	109
NH3	0.0015	0.003	86	115
Si	0.013	0.018	81	103
TDN	0.026	0.036	80	115
TDP	0.002	0.005	80	111
DOC	0.20	0.26	81	113
PP/PIP	0.0012	0.008	83	109
PC	0.097	0.210	n.a	n.a.
PN	0.019	0.025	n.a.	n.a.
BiSi	n.d.	0.175	81	110
TSS	2.0	6.0	n.a.	n.a.
Chla	0.95 ug/L	3.29 ug/L	n.a.	n.a.

^**Determined in Saline Matrix, Cruises of Bay Monitoring Program

n.d. = Not Determined
n.a. = Not Applicable
UCL= Upper Control Limit
LCL= Lower Control Limit