Inorganic Chemistry Unit

Comprised of the Nutrients and Wet Chemistry analytical groups.

Responsible for analysis of water samples for the parameters listed below utilizing a variety of analytical systems and procedures that include ion chromatography, flow injection analysis, fluorometry, spectrophotometry, and gravimetric analysis.

Unit SupervisorCindy Green

Nutrients Analytical Group – Parameters:

Ammonia Nitrogen (NH3-N)

Total Kjeldahl Nitrogen (TKN)

Nitrate + Nitrite Nitrogen (NO3NO2-N)

Total Phosphorus (TP)

Nitrite Nitrogen (NO2-N)

Nitrate Nitrogen (calculated)

Orthophosphate (PO4)

Dissolved TKN

Dissolved TP

Note: Ammonia Nitrogen = NH3 + NH4; Total Nitrogen = TKN + NO3NO2; Organic Nitrogen = TKN – NH3-N

Wet Chemistry Analytical Group – Parameters:

Bromide (Br-)

Fluoride (F-)

Chloride (Cl-)

Sulfate (SO42-)

Chemical Oxygen Demand

Chlorophyll a

Color - ADMI

Color – Platinum Cobalt

Cyanide, total

Hexavalent Chromium – Cr(VI)

MBAS (surfactants)

Oil & Grease, HEM


Silica (SiO2)

Phenols, total

Tannin & Lignin


Formaldehyde (no approved method)


Suspended Solids (total, fixed, volatile)

Total Solids (total, fixed, volatile)

Total Dissolved Solids

                   Our inorganic chemists at work.