Rapid and Sensitive Determination of Trace Chloride Ion in Drinks Using Resonance Light Scattering Technique

Table 1

Effect of interfering ions on the Cl⁻ determination^(a).

ion	[ion]/[Cl^−]	Change in RLS (%)	ion	[ion]/[Cl^−]	Change in RLS (%)
K^+	10000	0.75	CO32−	1000	2.01
Ca^2+	10000	1.39	PO43−	1000	1.79
Mg^2+	10000	1.56	Ac^−	1000	0.88
Zn^2+	10000	1.02	HPO42−	1000	1.09
Fe^2+	10000	1.34	H2PO4−	1000	1.67
Al^3+	10000	1.19	I^−	1	6.32
SO42−	1000	2.34	SO32−	1000	1.86

^(a)The cationic ions were added in the form of nitrate, and the anionic ions were added in the form of sodium. The concentration of Cl⁻ is 8.52 ng mL⁻¹.