2.4.3. Metal ion determination
Metal ion content of jute fabric before and after treatment with
chitosan–metal complex as well as those treated with metal salts
were evaluated using ‘‘Flame Atomic Absorption Spectrometer”,
Varian Spectra A220. The experimental technique was adopted as
follows: 0.5 g of dried jute fabric was dissolved in 50 ml 72%
H2SO4 at 3 C. The solution was completed to 250 ml using distilled
water. Ten milliliters from this solution was diluted to 500 ml
using distilled H2O. Aliquot from the latter was subjected to ‘‘Flame
Atomic Adsorption” determination. The metal ion content [C
(ppm)] of jute fabrics was determined from the following
equation:
CðppmÞ ¼ 2500A
where A is the value obtained from flame atomic adsorption
spectrophotometer.