| सारांश: | Bisphenol A (BPA) is the building block of polycarbonate plastics often used
in food and beverage containers, including baby bottles, and it is also used as
an additive in other plastics. BPA is also a component of epoxy resins used for
dental materials, including dental sealants, lining of food, beverage containers
and numerous other products including thermal papers. It is widely used as a
colour developer in the thermal paper.
BPA can cause the toxicological effects if present tolerable daily intake (TDI)
of 0.05 μg/kg body weight and the effects were proven to be pertinent for
human health. The BPA content in the thermal paper was extracted and
determined by High Performance Liquid Chromatography (HPLC) equipped
with a diode array detector.
Most of the thermal papers that were obtained from various thermal printers
contained BPA range from 0.0842 g/g to 0.119 g/g. The BPA content in
thermal papers were detected by High Performance Liquid Chromatography
(HPLC) equipped with a diode array detector. The highest BPA content
recorded from the credit card machine with 0.119 g/g BPA corresponded to
11.9 % of relative recovery. Meanwhile, the lowest BPA content obtained from the retail store machine
with the value of 0.0842 g/g BPA and 8.4 % relative recovery. Besides, the
Automated Teller Machine 2 reported highest BPA content compared to other
automated teller machines with 0.117 g/g BPA corresponded to 11.7% of
relative recovery. In the other hand, BPA content was not detected in the
thermal paper collected from the debit card machine.
The extraction method used in this study including double extraction, solvent
and sonication used increased the extraction efficiency more than 99.0 %. The
non-thermal paper used as control and that paper had also being spiked with
BPA standard for recovery calculation purpose. The % Recovery recorded for
spiking with 100 g/g and 500 g/g BPA standard solution were 107.0 % and
111.0% respectively.
|
|---|
