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Introducing Eyewear Lenses as Passive Samplers for Assessing Inhalation Exposure to Airborne Chemicals

ABSTRACT: Data-dependent acquisition results for air samples, collected using PDMS-coated and uncoated polycarbonate lenses. Separation was conducted on an Agilent 1290 Infinity II HPLC with InfinityLab Poroshell 120 EC-C18 (Agilent) column (100 mm x 2.1 mm x 1.9 um). Lenses were extracted by wiping with isopropyl alcohol wipes (for uncoated polycarbonate lenses) or acetonitrile wipes (for PDMS-coated lenses). Wipes were extracted by shaking in acetonitrile for 15 minutes at 150 RPM, then concentrated to near dryness and reconstituted in 0.5 ml.

INSTRUMENT(S): 6550 iFunnel Q-TOF LC/MS

ORGANISM(S): Abiotic Matrix (air)

SUBMITTER: Joseph Okeme

PROVIDER: MSV000099085 | MassIVE |

REPOSITORIES: MassIVE

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Project description:The aim of this study is to study gene expression in Brassica oleracea in shoot tissues of plants grown under contrasting P supplies (see Hammond JP et al., 2003, Plant Physiology, 132, 578-596 for background). Seeds of B. oleracea (var. alboglabra, A12dH) were first washed in 70% (v/v) ethanol/water, rinsed in distilled water and surface sterilised using 50% (v/v) domestic bleach/water. Seeds were rinsed and imbibed for 3 to 5 days in sterile distilled water at 4°C to break dormancy. Following imbibition, B. oleracea seeds were sown in un-vented, polycarbonate culture boxes (Sigma-Aldrich Company Ltd., Dorset UK). Seedlings were grown for 21 days on perforated polycarbonate discs (diameter 91 mm by 5 mm) placed on 75 ml of 0.8% (w/v) agar containing 1% (w/v) sucrose and a basal salt mix. Roots grew into the agar, but shoots remained on the opposite side of the disc. After 21 days, seedlings were transferred, still on polycarbonate discs, to a hydroponics system situated in a Saxcil growth cabinet (16 h daylength, set to 22°C and 80% humidity). Each polycarbonate disc was placed on a light-proof 500 ml beaker over 450 ml of nutrient solution. After 7 days, half the plants were transferred to nutrient solution containing no phosphate and the other half remained on full nutrient solution (control plants). Shoots were harvested 100 h after the withdrawal of P. !Samples were snap frozen in liquid nitrogen. RNA was extracted using the TRIzol extraction method and cleaned through a Qiagen RNeasy column. Experimenter name = Martin Broadley Experimenter phone = 0115 951 6382 Experimenter fax = 0115 951 6334 Experimenter institute = University of Nottingham Experimenter address = Plant Sciences Division Experimenter address = School of Biosciences Experimenter address = University of Nottingham Experimenter address = Sutton Bonington Experimenter address = Loughborough Experimenter zip/postal_code = LE12 5RD Experimenter country = UK Keywords: growth_condition_design

Project description:The aim of this study is to study gene expression in Brassica oleracea in shoot tissues of plants grown under contrasting P supplies (see Hammond JP et al., 2003, Plant Physiology, 132, 578-596 for background). Seeds of B. oleracea (var. alboglabra, A12dH) were first washed in 70% (v/v) ethanol/water, rinsed in distilled water and surface sterilised using 50% (v/v) domestic bleach/water. Seeds were rinsed and imbibed for 3 to 5 days in sterile distilled water at 4Â°C to break dormancy. Following imbibition, B. oleracea seeds were sown in un-vented, polycarbonate culture boxes (Sigma-Aldrich Company Ltd., Dorset UK). Seedlings were grown for 21 days on perforated polycarbonate discs (diameter 91 mm by 5 mm) placed on 75 ml of 0.8% (w/v) agar containing 1% (w/v) sucrose and a basal salt mix. Roots grew into the agar, but shoots remained on the opposite side of the disc. After 21 days, seedlings were transferred, still on polycarbonate discs, to a hydroponics system situated in a Saxcil growth cabinet (16 h daylength, set to 22Â°C and 80% humidity). Each polycarbonate disc was placed on a light-proof 500 ml beaker over 450 ml of nutrient solution. After 7 days, half the plants were transferred to nutrient solution containing no phosphate and the other half remained on full nutrient solution (control plants). Shoots were harvested 100 h after the withdrawal of P. !Samples were snap frozen in liquid nitrogen. RNA was extracted using the TRIzol extraction method and cleaned through a Qiagen RNeasy column. Experimenter name = Martin Broadley; Experimenter phone = 0115 951 6382; Experimenter fax = 0115 951 6334; Experimenter institute = University of Nottingham; Experimenter address = Plant Sciences Division; Experimenter address = School of Biosciences; Experimenter address = University of Nottingham; Experimenter address = Sutton Bonington; Experimenter address = Loughborough; Experimenter zip/postal_code = LE12 5RD; Experimenter country = UK Experiment Overall Design: 6 samples were used in this experiment

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Introducing Eyewear Lenses as Passive Samplers for Assessing Inhalation Exposure to Airborne Chemicals

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