Research Article
Microbiological Analysis and Content of Heavy Metals in Different Candies, Chocolates, and Their Wrappers in Bangladesh
Table 2
Calibration data for lead (Pb), chromium (Cr), nickel (Ni), and cadmium (Cd).
| | Metal | ID | Mean signal (Abs) | Entered conc. (mg/l) | Mean calculated conc. (mg/l) | Std dev | Average recovery (%) |
| | Pba | Blank | 0.000 | 0 | 0.000 | — | 101.03 | | A1 | 0.0227 | 1.0 | 1.095 | 0.0040 | | A3 | 0.0631 | 3.0 | 3.049 | 0.0002 | | A5 | 0.1024 | 5.0 | 4.949 | 0.0096 |
| | Crb | Blank | 0.000 | 0 | 0.000 | — | 101.88 | | B1 | 0.0235 | 1.0 | 1.048 | 0.0003 | | B3 | 0.0667 | 3.0 | 3.077 | 0.0059 | | B5 | 0.1053 | 5.0 | 5.007 | 0.0017 |
| | Nic | Blank | 0.000 | 0 | 0.000 | — | 102.34 | | C1 | 0.0241 | 1.0 | 1.071 | 0.0087 | | C3 | 0.0620 | 3.0 | 3.078 | 0.0015 | | C5 | 0.1009 | 5.0 | 4.982 | 0.0022 |
| | Cdd | Blank | 0.000 | 0 | 0.000 | — | 101.76 | | D1 | 0.0214 | 1.0 | 1.037 | 0.0009 | | D3 | 0.0609 | 3.0 | 3.091 | 0.0041 | | D5 | 0.1077 | 5.0 | 5.015 | 0.0056 |
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aCorrelation coefficient: 0.9994; slope: 0.0204; intercept: 0.0012. bCorrelation coefficient: 0.9986; slope: 0.0210; intercept: 0.0016. cCorrelation coefficient: 0.9984; slope: 0.0199; intercept: 0.0019. dCorrelation coefficient: 0.9986; slope: 0.0214; intercept: -0.0006.
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