Application of Dispersive Liquid-Liquid Microextraction with Graphite Furnace Atomic Absorption Spectrometry for Determination of Trace Amounts of Zinc in Water Samples

Table 2

Regression and analytical parameters.

Regression equation using DLLME	𝐴=0.016+0.344𝐶
Linear range	0.20–50 ng mL^−1
Limit of detection	0.09 ng mL^−1
Preconcentration factor	250
𝑟	0.9974
RSD% (𝑛=10)	2.53
Extraction recovery%	98.6