Drug Effect of Thulium(III)-Arsenazo III Complex on Herring Sperm DNA

Table 1

Data from the Scatchard equation on the interaction between thulium(III)-arsenazo III complex and DNA.

Curve	cThulium(III)-arsenazo III/cDNA	NaCl (mol/L)	Scatchard plot values	K (L/mol)
a	0.00	0.00	r/c = 1.99 × 10^4 – 1.05 × 10^7 r	1.05 × 10^7	0.00169
		0.05	r/c = 4.23 × 10^4 – 1.28 × 10^7 r	1.28 × 10^7	0.00207
b	0.20	0.00	r/c = 2.35 × 10^3 – 8.63 × 10^6 r	8.63 × 10^6	0.00027
		0.05	r/c = 1.24 × 10^4 – 8.58 × 10^6 r	8.58 × 10^6	0.00122
c	0.40	0.00	r/c = 2.61 × 10^4 – 6.01 × 10^6 r	6.01 × 10^6	0.00404
		0.05	r/c = 9.14 × 10^3 – 9.93 × 10^6 r	9.93 × 10^6	0.00082
d	0.60	0.00	r/c = 2.85 × 10^4 – 5.62 × 10^6 r	5.62 × 10^6	0.00420
		0.05	r/c = 1.74 × 10^4 – 1.04 × 10^7 r	1.04 × 110^7	0.00149