Determination of Pb in NaCl solution

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	Application Note : Flame AAS Technique
	Determination of Pb in NaCl solution



	Experimental
	The measurements are performed by using the Flame AAS technique with Single beam mode and Background correction is without Background correction, Deuterium background correction and Self-reversal (Smith-Hieftje) Background correction.

	Sample preparation
	Prepared sample solution of Pb 1.0 mg/L in 1% HNO3 and 1.0 mg/L Pb in 3% NaCl and 1% HNO3

	Method parameter
	Element : Pb
	Flame type : Air-C2H2

Result:

Figure 1 : Comparison of data by using Without Background, Deuterium and Self- reversal Background correction mode ( without NaCl).

Figure 2 : Comparison of data by using Without Background, Deuterium and self- reversal Background correction mode ( Addition NaCl).

Summary

The Deuterium Background correction (D2) cannot suppress the matrix (Over the UV range) The Deuterium Background correction can solve the problem of the matrix in the range of UV wavelength ( 190 – 350 nm). The resonance line of the matrix (Na from NaCl) is 589.0 nm.

The Self-reversal Background Correction (S-H) can suppress the matrix (NaCl) better than Deuterium (D2) and Non-Background correction. The Self-reversal Background Correction (S-H) can solve the problem of the matrix in each wavelength depends on that element. The value of background in the Self-reversal Background Correction mode is more than that of Deuterium mode and Non-Background correction mode. The Self-reversal Background Correction is the good technique for determination of the trace elements which there is the wavelength of the matrix more than 350 nm.

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