Submitted file =  98241dat.wb1
Cruise: Surv-1998-241
Ship: R/V Laurentian
Chief Scientist: Jim Cotner
PI: Tom Johengen   Ph#: 734-741-2203   Email:  tom.johengen@noaa.gov

Data type: Particulate and dissolved nutrients on discrete water samples

Total Dissolved Phosphorus (TDP) : molybdate/ascorbic acid method on AutoAnalyzer II, 
   after persulfate digestion of 0.2 uM filtered samples
Particulate Phosphorus (PP) : molybdate/ascorbic acid method on AutoAnalyzer II, 
   after combustion, boiling HCL extraction of particles retained on a GFF filter
Soluble Reactive Phosphorus (SRP) : molybdate/ascorbic acid method on AutoAnalyzer II, 
   of  0.2 uM filtered samples
Nitrate + Nitrite (NO3): cadium reduction method on AutoAnalyzer II, of 0.2 uM filtered 
   samples
Ammonium (NH4): phenol method on AutoAnalyzer II, of 0.2 uM filtered samples

Summary of Analytical Precision

PP avg. coeff of variance on analytical reps = 9.3%    (n=44 pairs)
TDP avg. coeff of variance on field reps = 16.5%  (n=36 pairs)
SRP avg. coeff of variance on field reps = 44%  (n=36 pairs)
NO3 avg. coeff of variance on field reps = 1.3%  (n=20 pairs)
NH4 avg. coeff of variance on field reps = 19.6%  (n=20 pairs)