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MB Sample ID: SA113435
| Local Sample ID: | ASWFilterBlk_2 |
| Subject ID: | SU001467 |
| Subject Type: | Other |
| Subject Species: | Nitzschia lecointei |
| Taxonomy ID: | 186028 |
| Gender: | Not applicable |
Select appropriate tab below to view additional metadata details:
Subject:
| Subject ID: | SU001467 |
| Subject Type: | Other |
| Subject Species: | Nitzschia lecointei |
| Taxonomy ID: | 186028 |
| Gender: | Not applicable |
Factors:
| Local Sample ID | MB Sample ID | Factor Level ID | Level Value | Factor Name |
|---|---|---|---|---|
| ASWFilterBlk_2 | SA113435 | FL014268 | Blk | Type |
| ASWFilterBlk_2 | SA113435 | FL014268 | NA | Salinity |
| ASWFilterBlk_2 | SA113435 | FL014268 | NA | Temp_degC |
Collection:
| Collection ID: | CO001462 |
| Collection Summary: | Cultured diatom cells at different salinities and temperatures grown to exponential phase were filtered onto 0.2-micron filters and extracted for metabolites as described in methods. Three dedicated ice cores were sampled from the Chukchi Sea near Utqiaġvik, AK. The bottom 5-cm sections were placed in polycarbonate tubs, allowed to melt at 4°C in artificial seawater, and filtered onto 0.2-micron filters. Filters were extracted for metabolites as described in methods. All filters were frozen in liquid nitrogen immediately after filtration and stored in a -80 C freezer until extraction. |
| Sample Type: | Diatom cells/Particulate matter from sea ice cores |
| Storage Conditions: | Described in summary |
Treatment:
| Treatment ID: | TR001482 |
| Treatment Summary: | Diatom cells were cultured in a matrix of two temperatures (–1°C and 4°C) and two salinities (32 and 40) in triplicate. There was no treatment for the sea ice cores – this was a study of how the cultured diatoms compare to the diatom-dominated Arctic sea-ice communities. |
Sample Preparation:
| Sampleprep ID: | SP001475 |
| Sampleprep Summary: | Each sample was extracted using a modified Bligh-Dyer extraction. Briefly, filters were cut up and put into 15 mL teflon centrifuge tubes containing a mixture of 100 µm and 400 µm silica beads. Heavy isotope-labeled internal standards were added along with ~2 mL of cold aqueous solvent (50:50 methanol:water) and ~3 mL of cold organic solvent (dichloromethane). The samples were shaken on a FastPrep-24 Homogenizer for 30 seconds and chilled in a -20 °C freezer repeatedly for three cycles of bead-beating and a total of 30 minutes of chilling. The organic and aqueous layers were separated by spinning samples in a centrifuge at 4,300 rpm for 2 minutes at 4 °C. The aqueous layer was removed to a new glass centrifuge tube. The remaining organic fraction was rinsed three more times with additions of 1 to 2 mL of 50:50 methanol:water. All aqueous rinses were combined for each sample and dried down under N2 gas. The remaining organic layer was transferred into a clean glass centrifuge tube and the remaining bead beating tube was rinsed two more times with cold organic solvent. The combined organic rinses were centrifuged, transferred to a new tube, and dried under N2 gas. Dried aqueous fractions were re-dissolved in 380 µL of water. Dried organic fractions were re-dissolved in 380 µL of 1:1 water:acetonitrile. 20 µL of isotope-labeled injection standards in water were added to both fractions. Blank filters were extracted alongside samples as methodological blanks. |
| Processing Storage Conditions: | On ice |
| Extraction Method: | Bligh-Dyer |
| Extract Storage: | -80℃ |
Combined analysis:
| Analysis ID | AN002323 | AN002324 | AN002325 | AN002326 | AN002327 | AN002328 | AN002329 | AN002330 | AN002331 |
|---|---|---|---|---|---|---|---|---|---|
| Analysis type | MS | MS | MS | MS | MS | MS | MS | MS | MS |
| Chromatography type | HILIC | HILIC | HILIC | HILIC | HILIC | HILIC | HILIC | HILIC | Reversed phase |
| Chromatography system | Waters Acquity I-Class | Waters Acquity I-Class | Waters Acquity I-Class | Waters Acquity I-Class | Waters Acquity I-Class | Waters Acquity I-Class | Waters Acquity I-Class | Waters Acquity I-Class | Waters Acquity I-Class |
| Column | SeQuant ZIC-pHILIC (150 x 2.1mm,5um) | SeQuant ZIC-pHILIC (150 x 2.1mm,5um) | SeQuant ZIC-pHILIC (150 x 2.1mm,5um) | SeQuant ZIC-pHILIC (150 x 2.1mm,5um) | SeQuant ZIC-pHILIC (150 x 2.1mm,5um) | SeQuant ZIC-pHILIC (150 x 2.1mm,5um) | SeQuant ZIC-pHILIC (150 x 2.1mm,5um) | SeQuant ZIC-pHILIC (150 x 2.1mm,5um) | Waters Acquity UPLC HSS Cyano (100 x 2.1mm,1.8um) |
| MS Type | ESI | ESI | ESI | ESI | ESI | ESI | ESI | ESI | ESI |
| MS instrument type | Triple quadrupole | Triple quadrupole | Triple quadrupole | Triple quadrupole | Orbitrap | Orbitrap | Orbitrap | Orbitrap | Triple quadrupole |
| MS instrument name | Waters Xevo-TQ-S | Waters Xevo-TQ-S | Waters Xevo-TQ-S | Waters Xevo-TQ-S | Thermo Q Exactive HF hybrid Orbitrap | Thermo Q Exactive HF hybrid Orbitrap | Thermo Q Exactive HF hybrid Orbitrap | Thermo Q Exactive HF hybrid Orbitrap | Waters Xevo-TQ-S |
| Ion Mode | POSITIVE | POSITIVE | NEGATIVE | NEGATIVE | POSITIVE | POSITIVE | NEGATIVE | NEGATIVE | POSITIVE |
| Units | Normalized Peak Area Per L Seawater | Normalized Peak Area Per RFU | Normalized Peak Area Per L Seawater | Normalized Peak Area Per RFU | Normalized Peak Area Per L Seawater | Normalized Peak Area Per RFU | Normalized Peak Area Per L Seawater | Normalized Peak Area Per RFU | Normalized Peak Area Per RFU |
Chromatography:
| Chromatography ID: | CH001707 |
| Chromatography Summary: | See attached summary |
| Methods Filename: | TruxalCarlson_LC_Methods_HD.txt TruxalCarlson_MS_Methods_HD.txt |
| Instrument Name: | Waters Acquity I-Class |
| Column Name: | SeQuant ZIC-pHILIC (150 x 2.1mm,5um) |
| Chromatography Type: | HILIC |
| Chromatography ID: | CH001708 |
| Chromatography Summary: | See attached summary |
| Methods Filename: | TruxalCarlson_LC_Methods_HD.txt TruxalCarlson_MS_Methods_HD.txt |
| Instrument Name: | Waters Acquity I-Class |
| Column Name: | Waters Acquity UPLC HSS Cyano (100 x 2.1mm,1.8um) |
| Chromatography Type: | Reversed phase |
MS:
| MS ID: | MS002165 |
| Analysis ID: | AN002323 |
| Instrument Name: | Waters Xevo-TQ-S |
| Instrument Type: | Triple quadrupole |
| MS Type: | ESI |
| MS Comments: | See protocol, data from culture samples |
| Ion Mode: | POSITIVE |
| MS ID: | MS002166 |
| Analysis ID: | AN002324 |
| Instrument Name: | Waters Xevo-TQ-S |
| Instrument Type: | Triple quadrupole |
| MS Type: | ESI |
| MS Comments: | See protocol, data from field samples |
| Ion Mode: | POSITIVE |
| MS ID: | MS002167 |
| Analysis ID: | AN002325 |
| Instrument Name: | Waters Xevo-TQ-S |
| Instrument Type: | Triple quadrupole |
| MS Type: | ESI |
| MS Comments: | See protocol, data from culture samples |
| Ion Mode: | NEGATIVE |
| MS ID: | MS002168 |
| Analysis ID: | AN002326 |
| Instrument Name: | Waters Xevo-TQ-S |
| Instrument Type: | Triple quadrupole |
| MS Type: | ESI |
| MS Comments: | See protocol, data from field samples |
| Ion Mode: | NEGATIVE |
| MS ID: | MS002169 |
| Analysis ID: | AN002327 |
| Instrument Name: | Thermo Q Exactive HF hybrid Orbitrap |
| Instrument Type: | Orbitrap |
| MS Type: | ESI |
| MS Comments: | See protocol, data from culture samples |
| Ion Mode: | POSITIVE |
| MS ID: | MS002170 |
| Analysis ID: | AN002328 |
| Instrument Name: | Thermo Q Exactive HF hybrid Orbitrap |
| Instrument Type: | Orbitrap |
| MS Type: | ESI |
| MS Comments: | See protocol, data from field samples |
| Ion Mode: | POSITIVE |
| MS ID: | MS002171 |
| Analysis ID: | AN002329 |
| Instrument Name: | Thermo Q Exactive HF hybrid Orbitrap |
| Instrument Type: | Orbitrap |
| MS Type: | ESI |
| MS Comments: | See protocol, data from culture samples |
| Ion Mode: | NEGATIVE |
| MS ID: | MS002172 |
| Analysis ID: | AN002330 |
| Instrument Name: | Thermo Q Exactive HF hybrid Orbitrap |
| Instrument Type: | Orbitrap |
| MS Type: | ESI |
| MS Comments: | See protocol, data from field samples |
| Ion Mode: | NEGATIVE |
| MS ID: | MS002173 |
| Analysis ID: | AN002331 |
| Instrument Name: | Waters Xevo-TQ-S |
| Instrument Type: | Triple quadrupole |
| MS Type: | ESI |
| MS Comments: | See protocol, data from culture samples |
| Ion Mode: | POSITIVE |
