biostudies-literatureUnknown26(15)Issarangkura Na Ayutthaya PA simple flow injection FlameAAS for lead determination with an alginate-polyurethane composite (ALG-PUC) monolithic in-valve column has been developed. The ALG-PUC monolithic rod was prepared by mixing methylene diphenyl diisocyanate with polyol and sodium alginate with the ratio of 2:1:1 by weight for a 5 min polymerization reaction. It was then put into a column (0.8 cm i.d × 11 cm length) situated in a switching valve for the FI set up. A single standard calibration could be obtained by plotting the loaded µg Pb2+ vs. FI response (absorbances). The loaded µg Pb2+ is calculated: μg Pb2+ = FRload × LT × CPb2+, where the FR load is the flow rate of the loading analyte solution (mL min-1), LT is the loading time (min), and CPb2+ is the Pb2+ concentration (µg mL-1). A linear calibration equMolecules (Basel, Switzerland)4397https://www.ebi.ac.uk/biostudies/studies/S-EPMC8347769biostudies-literatureDetermination of Lead Employing Simple Flow Injection AAS with Monolithic Alginate-Polyurethane Composite Packed In-Valve Column.PMC8347769Yeerum CKiwfo KIssarangkura Na Ayutthaya PMurakami HVongboot MGrudpan KKesonkan KTeshima NfalseDetermination of Lead Employing Simple Flow Injection AAS with Monolithic Alginate-Polyurethane Composite Packed In-Valve Column.A simple flow injection FlameAAS for lead determination with an alginate-polyurethane composite (ALG-PUC) monolithic in-valve column has been developed. The ALG-PUC monolithic rod was prepared by mixing methylene diphenyl diisocyanate with polyol and sodium alginate with the ratio of 2:1:1 by weight for a 5 min polymerization reaction. It was then put into a column (0.8 cm i.d × 11 cm length) situated in a switching valve for the FI set up. A single standard calibration could be obtained by plotting the loaded µg Pb2+ vs. FI response (absorbances). The loaded µg Pb2+ is calculated: μg Pb2+ = FRload × LT × CPb2+, where the FR load is the flow rate of the loading analyte solution (mL min-1), LT is the loading time (min), and CPb2+ is the Pb2+ concentration (µg mL-1). A linear calibration equ2021-01-01T00:00:00Z2021 Jul2025-05-29T20:04:13.435Z2025-05-29T20:04:13.435ZS-EPMC83477693436155310.3390/molecules26154397