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Application of Polyhydroxybutyrate-b-polyethyleneglycol    (a block co-polymer) for Solid Phase Extraction of Lead and Copper in Different Food Samples.
<strong>Pakistan Journal of Analytical &amp; Environmental Chemistry</strong>, [S.l.], v. 15, n. 1, p. 8, dec. 2014.
ISSN 2221-5255.
Available at: &lt;<a href="https://pjaec.pk/index.php/pjaec/article/view/193" target="_new">https://pjaec.pk/index.php/pjaec/article/view/193</a>&gt;. Date accessed: 27 july 2024.