Study on Chemical State of Sulfur Impurity in Metal-free Phthalocyanine by XRF Spectrometry
Zhou Shu-Qin, Yu Jian-Er, Jin Xiang-Feng, Wang Qing-Guang
Acta Phys. -Chim. Sin. . 1995, (05): 447 -449 .  DOI: 10.3866/PKU.WHXB19950513