Table 4

Interferent^b	MPM^a	SSM	Interferent^b	MPM^a	SSM
K⁺	2.88	3.15	Cr³⁺	3.33	4.20
N^a+	2.95	3.33	Maltose	3.52	---
NH⁴⁺	2.65	2.93	Glucose	3.50	---
Ba²⁺	3.21	3.55	Lactose	3.54	---
Cu²⁺	3.20	3.62	Urea	3.23	---
Co²⁺	3.11	3.55	Ascorbic acid	3.30	---
Ni²⁺	3.19	3.65	Aspirin	1.15	---
Mn²⁺	2.56	3.11	L-Lysine	3.34	---
Mg²⁺	2.89	3.36	L-cystine	3.20	---
Zn²⁺	2.67	3.28	L-Glycine	3.19	---
Fe³⁺	3.27	3.76	L-Theronine	3.44	---

(---): No response

^aEach value is the average of three determinations.

^bAllinterferents ions are in the form of chloride solution (0.5 M for MPM) & (10-3 M for SSM).

Table 4: Selectivity coefficient values for

CLO-ST/CMCPS.