TY - RPRT TI - Analytical properties of some commercially available nitrate reductase enzymes evaluated as replacements for cadmium in automated, semiautomated, and manual colorimetric methods for determination of nitrate plus nitrite in water AU - Charles J. Patton AU - Jennifer R. Kryskalla PY - 2013 DO - 10.3133/sir20135033 UR - https://pubs.usgs.gov/publication/sir20135033 ID - sir20135033 ER -