1. Department of Physics, Faculty of Mathematic and Natural Science, IPB University, Bogor, Indonesia
2. BPPT Jakarta, Indonesia
3. PT Tesena Inovindo, Jakarta, Indonesia
4. Department Applied Chemistry for Environment, Graduate School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda-Shi, Hyogo-Ken 669-1337, Japan
5. Department of Biomedical Chemistry, Graduate School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda-Shi, Hyogo-Ken 669-1337, Japan