Study of Silver Nanoparticles Sensitized Fluorescence and Second-Order Scattering of Terbium(III)-Pefloxacin Mesylate Complex and Determination of Pefloxacin Mesylate

Table 1

Tolerance of coexisting substance^a.

Substance	Concentration coexisting (×10^−6 M)	Intensity change (%)	Substance	Concentration coexisting (×10^−6 M)	Intensity change (%)
Hemoglobin	10^b	+0.4	Fe^3+, NO3^−	10	+3.4
Myoglobin	1^b	−0.1	Mg^2+, SO4^2−	1000	+2.4
Vitamin B1	5^b	−4.7	NH4^+, Cl^−	10000	+4.5
Glucose	500^b	+4.8	K^+, Cl^−	1000	−1.3
Fructose	500^b	+4.4	Co^2+, SO4^2−	100	−1.1
Starch	100^b	+4.0	Na^+, Cl^−	10000	+4.6
𝛽-alanine	100^b	−0.7	Mn^2+, SO4^2−	1000	+4.8
𝛽-CD	100^b	+2.7	Cd^2+, Ac^−	100	−3.2
Uric acid	5	−2.6	Zn^2+, SO4^2−	100	−0.7
𝛽-dextrin	50	+1.2	Pb^2+, NO3^−	100	+1.9
Al^3+, SO4^2−	10	+5.1	K^+, H2PO4^−	10	+4.1
Ni^2+, NO3^−	10	+3.0	Cr^3+, Cl^−	100	−4.0
Cu^2+, SO4^2−	10	−4.9	Ca^2+, Cl^−	1000	+4.8

aConditions: PFLX, 1.0×10⁻⁶ M; Tb(III) ion, 2.0×10⁻⁴ M; silver nanoparticles, 5.0×10⁻⁶ M; pH, 6.0×10⁻⁶ g mL⁻¹.