Abstract:

Surface and bottom water samples were collected July 20, 2016 at 9 stations on the Pensacola Shelf. Samples for nitrate and silicate were filtered through GF/F filters before analysis. Total Kjeldahl nitrogen and total phosphorus samples were preserved with sulfuric acid. All samples were analyzed with a Lachet FIA system.

Suggested Citation:

Jane Caffrey. 2017. Surface and Bottom Water Nutrient Data July 2016, Pensacola Shelf. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N7DZ06QP

Purpose:

These samples were collected to characterize the nutrient conditions at the 9 stations.

Data Parameters and Units:

Lab ID#, Bottle, Field ID, Site, Layer, Sampling date (MM/DD/YYYY), Receipt date (MM/DD/YYYY), Receipt time (HH:MM), Sample matrix, Sampler, Analyte (Dissolved nitrate+nitrite, dissolved silicate, total Kjeldahl nitrogen, total phosphorus), Result, Units (ug N/L, mg/L, mg N/L, mg P/L), Data qualifiers (Y - The laboratory analysis was from a sample preserved by an alternative, non-standard preservation procedure. Hold-time has not been assessed for this preservation procedure. The data may not be accurate, J6 - Analysis was performed without NELAC accreditation, I - The reported value is ≥ the Limit of Detection, but less than the Practical Quantitation Limit (Limit of Quantitation), and has less certainty, U - Compound was analyzed for but not detected), Dilution factor, Calculated minimum detection limit (CALC_MDL), Limit of quantification (LOQ), Analysis date (MM/DD/YYYY), Analysis time (HH:MM), Method Site Latitude Longitude AR1 30.266333 -87.33185 AR2 30.258433 -87.336783 AR3 30.25454 -87.3276 AR4 30.26655 -87.3474 AR5 30.2585 -87.354567 AR6 30.252933 -87.3445 AR7 30.2666 -87.36168 AR8 30.25891 -87.36932 AR9 30.252483 -87.361333

Methods:

EPA method numbers 353.2 370.1 351.2 365.4

Instruments:

Lachat FIA used for analysis

Error Analysis:

Samples analyzed by NELAC certified laboratory

Individual Files: