Polyhydroxybutyrate-b-polyethyleneglycol block copolymer for the solid phase extraction of lead and copper in water, baby foods, tea and coffee samples.
A new adsorbent, polyhydroxybutyrate-b-polyethyleneglycol, was used for the separation and preconcentration of copper(II) and lead(II) ions prior to their flame atomic absorption spectrometric detections. The influences of parameters such as pH, amount of adsorbent, flow rates and sample volumes were investigated. The polymer does not interact with alkaline, alkaline-earth metals and transition metals. The enrichment factor was 50. The detection limits were 0.32 μg L(-1) and 1.82 μg L(-1) for copper and lead, respectively. The recovery values were found >95%. The relative standard deviations were found to be less than 6%. The validation of the procedure was performed by analysing certified reference materials; NIST SRM 1515 Apple leaves, IAEA-336 Lichen and GBW-07605 Tea. The method was successfully applied for the analysis of analytes in water and food samples.
Gaziosmanpasa University, Faculty of Science and Arts, Chemistry Department, 60250 Tokat, Turkey; National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro 76080, Pakistan.
Sham Kumar
SK
Wadhwa
Gaziosmanpasa University, Faculty of Science and Arts, Chemistry Department, 60250 Tokat, Turkey.
Mustafa
M
Tuzen
National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro 76080, Pakistan.
Tasneem Gul
TG
Kazi
Erciyes University, Faculty of Sciences, Chemistry Department, 38039 Kayseri, Turkey. Electronic address: msoylak@gmail.com.
Mustafa
M
Soylak
Bulent Ecevit University, Department of Chemistry, 67100 Zonguldak, Turkey.
Baki
B
Hazer
D000327:Adsorption; D001628:Beverages / Q000032:analysis*; D003069:Coffee / Q000737:chemistry; D003300:Copper / Q000737:chemistry / Q000302:isolation & purification*; D005506:Food Contamination / Q000032:analysis*; D006885:Hydroxybutyrates / Q000737:chemistry*; D007225:Infant Food / Q000032:analysis*; D011092:Polyethylene Glycols / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D052616:Solid Phase Extraction / Q000295:instrumentation / Q000379:methods*; D013662:Tea / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification*
D003069:Coffee; D006885:Hydroxybutyrates; D011108:Polymers; D013662:Tea; D014874:Water Pollutants, Chemical; D011092:Polyethylene Glycols; D003300:Copper
Copper; Food; Lead; Polyhydroxybutyrate-b-polyethyleneglycol; Solid phase extraction; Water