Dataset: HPLC pigments along the US GEOTRACES East Pacific Zonal Transect from the R/V Thomas G. Thompson TN303 cruise in the tropical Pacific from Peru to Tahiti during 2013 (U.S. GEOTRACES EPZT project)

Bidigare Pigments

Notes on the data:
Parameter names were modified on 16 May 2017 to comply with SCOR Working Group 78 (http://www.scor-int.org/SCOR_WGs_WG78.htm).
Pigment values are concentrations in ng/L.

Where the value is shown as zero, this could more properly be stated as "less than limit of detection".
See LoD estimates below.

Filtered volume amounts were obtained from the hand written cast sheets.
They are listed with these data simply for reference in case one has different values listed elsewhere.

Station 21: No depths are listed for Station 21 because these were not available on the cast sheets.

The response factor for DIADINO was used to calculate DIATO values.

Station 2: It is possible that some HEX FUCO is present. The high levels of FUCO at this station resulted in correspondingly large cis-fuco peaks, one of which eluted at the same retention time as HEX FUCO would elute if present, so HEX FUCO cannot be quantified. The size of the peak is about "right" for it to be due mostly or entirely to cis-fuco, but some contribution from HEX FUCO cannot be ruled out.

Station 4, sample 2373:  Values for this one are oddly high for its location in the profile. I see no obvious errors on my end. Possible filter in wrong cryotube?

LoD Estimates:
Volume Filtered (L)               1.84    2.00    3.80    4.00
LoD for chlorophylls (ng/L)    4.8      4.4     2.3      2.2
LoD for carotenoids (ng/L)     3.2     2.9     1.5      1.5

These values are calculated based on LoD for CHL A of 0.59 ng/injection and for ZEA of 0.39 ng/injection, with an injection volume of 0.2 mL and an extract volume of 3.0 mL.

Pigment values <LOD were removed from the data set and reported as zeroes. Zeroes for this data set should be considered to mean <LOD. 

Pigment = Abbreviation
Chlorophyllide a = CHLIDE_A
Chlorophyll C = CHL_C_TOT
Peridinin = PERID
19'-butanoyloxyfucoxanthin = BUT_FUCO
Fucoxanthin = FUCO
19'-hexanoyloxyfucoxanthin = HEX_FUCO
Prasinoxanthin = PRAS
Violaxanthin = VIOLA
Diadinoxanthin = DIADINO
Alloxanthin = ALLO
Diatoxanthin = DIATO
Lutein = LUT
Zeaxanthin = ZEA
Chlorophyll b = CHL_B
Alpha-carotene = ALPHA_CAR
Beta-carotene = BETA_CAR
Divinyl chlorphyll a = DV_CHL_A
Monovinyl chlorophyll a = CHL_A
Total chlorophyll a = CHL_A_DV_CHL_A