Meta file for submission of data file: nutrients-surv-1998-139.dat Cruise: Surv-1998-139 (May 20 - May 23, 1998) Ship: R/V Lake Guardian PI: Tom Johengen Ph#: 734-741-2203 Email: tom.johengen@noaa.gov Data type: Particulate and dissolved nutrients, chlorophyll, suspended solids on discrete water samples 1) Total suspended material (TSM): gravimetric, GF-F filters 2) Total Phosphorus (TP) : molybdate/ascorbic acid method on AutoAnalyzer II, after persulfate digestion 3) Total Dissolved Phosphorus (TDP) : molybdate/ascorbic acid method on AutoAnalyzer II, after persulfate digestion of 0.2 uM filtered samples 4) Particulate Phosphorus (PP) : molybdate/ascorbic acid method on AutoAnalyzer II, after combustion, boiling HCL extraction of particles retained on a GFF filter 5) Bioavailable Phosphorus (AVP) : molybdate/ascorbic acid method on AutoAnalyzer II, after NaOH digestion of particles retained on 0.2 uM nucleopore filter 6) Particulate Silica (PSiO2) : molybdate/ascorbic acid method on AutoAnalyzer II, after NaOH digestion of particles retained on 0.2 uM nucleopore filter 7) Soluble Reactive Phosphorus (SRP) : molybdate/ascorbic acid method on AutoAnalyzer II, of 0.2 uM filtered samples 8) Nitrate + Nitrite (NO3): cadium reduction method on AutoAnalyzer II, of 0.2 uM filtered samples 9) Ammonium (NH4): phenol method on AutoAnalyzer II, of 0.2 uM filtered samples 10) Soluble Reactive Silica (SiO2): molybdate/ascorbic acid method on AutoAnalyzer II of 0.2 uM filtered samples 11) Chloride (Cl): ferric thicyanate method on AutoAnalyzer II of 0.2 uM filtered samples 12) Particulate Organic Carbon (POC): Perkin Elmer CHN elemental analyzer 13) Particulate Organic Nitrogen (PON): Perkin Elmer CHN elemental analyzer 14) Chlorophyll (CHL) : Fluorometric method, acid corrected, after extraction of particles retained on a GFF filter with Dimethyl Foramimide. TDP coeff of variance on field reps = 11.6% (n=11) PP coeff of variance on field reps = 11.1% (n=11) CHL coeff of variance on duplicates = 2.4% (n=33 pairs) POC coeff of variance on duplicates = 7.7% (n=33 pairs) PON coeff of variance on duplicates = 13.9% (n=33 pairs)