63. U. Divrikli, S. Gulmez, M. Soylak, L. Elçi, Flame Atomic Absorption Spectrometric Determinations of Some Trace Metals after Coprecipitation with Gold-APDC, Colloquium Spectroscopium Internationale XXXVI, Budapest, Hungary, PM-67 (2009).

64. M. Soylak, Trends in Preconcentration-Separation of Heavy Metal Ions, Keynote Speaker (KN6), 5. Black Sea Basin Conference on Analytical Chemistry, 5th BBCAC, Fatsa, Ordu-Turkey (2009).

65. M. Soylak, Y.E. Unsal, Separation-Preconcentration of Traces Gold from Geological and Water Samples on Double-Walled Carbon Nanotubes, PPII-58 (Ab 318), 5. Black Sea Basin Conference on Analytical Chemistry, 5th BBCAC, Fatsa, Ordu-Turkey (2009).

66. A. Duran, M. Tuzen, M. Soylak, Heavy Metal Distribution in Some Cigarette Samples Available in Turkish Market, PPI-29 (Ab 145), 5. Black Sea Basin Conference on Analytical Chemistry, 5th BBCAC, Fatsa, Ordu-Turkey (2009).

67. A. Gündoğdu, C. Duran, D. Özdeş, H.B. Şentürk, M. İmamoğlu, M. Soylak, Adsorption of Cadmium, Copper and Lead onto Activated Carbon Prepared from Tea-Industry Waste, PPI-54 (Ab 267), 5. Black Sea Basin Conference on Analytical Chemistry, 5th BBCAC, Fatsa, Ordu-Turkey (2009).

68. O.D. Uluozlu, M. Tuzen, D. Mendil, B. Kahveci, M. Soylak, Coprecipitation for Speciation of Chromium(III) And Chromium(VII) in Water Samples Using New Synthesis Organic Precipitant, PPII-22 (Ab 19), 5. Black Sea Basin Conference on Analytical Chemistry, 5th BBCAC, Fatsa, Ordu-Turkey (2009).

69. O.D. Uluozlu, M. Tuzen, I. Karaman, M. Soylak, Biosorption And Speciation of Mercury(II) and Methyl Mercury on Streptococcus Pyogenes Loaded Dowex Optipore SD-2, PPII-23 (Ab 20), 5. Black Sea Basin Conference on Analytical Chemistry, 5th BBCAC, Fatsa, Ordu-Turkey (2009).

70. D. Çitak, M. Tüzen, İ. Karaman, M. Soylak, Selective Speciation and Cold Vapour Atomic Absorption Spectrometric Determination of Mercury(II) and Methyl Mercury PPII-24 (Ab 25), 5. Black Sea Basin Conference on Analytical Chemistry, 5th BBCAC, Fatsa, Ordu-Turkey (2009).

71. D. Çitak, M. Tüzen, M. Soylak, Multi Element Coprecipitation by Zirconium Hydroxide and Flame Atomic Absorption Spectrometric Determination, PPII-25 (Ab 26), 5. Black Sea Basin Conference on Analytical Chemistry, 5th BBCAC, Fatsa, Ordu-Turkey (2009).

72. M. Tuzen, O.D. Uluozlu, D. Mendil, M. Soylak, Coprecipitation of Some Elements with Ni/2-Nitroso-1-Naphthol-4-Sulfonic Acid And Atomic Absorption Spectrometric Determination, PPII-26 (Ab 27), 5. Black Sea Basin Conference on Analytical Chemistry, 5th BBCAC, Fatsa, Ordu-Turkey (2009).

73. S. Saracoglu, M. Soylak, Carrier Element-Free Coprecipitation Method for Separation and Preconcentration of Some Trace Metal Ions by Using an N- Cetyl N,N,N Trimethyl Ammonium Bromide, PPII-28 (Ab 51), 5. Black Sea Basin Conference on Analytical Chemistry, 5th BBCAC, Fatsa, Ordu-Turkey (2009).

74. M. Soylak, Y.E. Unsal, A. Aydin, N. Kizil, Preconcentration-Separation of Cu(II) and Pb(II) on Cellulose Acetate Membrane Filter, PPII-32 (Ab 97), 5. Black Sea Basin Conference on Analytical Chemistry, 5th BBCAC, Fatsa, Ordu-Turkey (2009).

75. Ü. Divrikli, Ş. Gülmez, M. Soylak, L. Elçi, Coprecipitation of Some Trace Metals with Gold-Ammonium Pyrrolidine Dithiocarbamate, PPII-40 (Ab 181), 5. Black Sea Basin Conference on Analytical Chemistry, 5th BBCAC, Fatsa, Ordu-Turkey (2009).

76. V.N. Bulut, C. Duran, M. Soylak, H. Kantekin, M. Tüfekçi, Preconcentration of Palladium by Complexing with A N₄O₂ Mixed Donor Ligand Derivative on XAD-2010 Resin and Determination in Environmental Samples by FAAS, PPII-42 (Ab 209), 5. Black Sea Basin Conference on Analytical Chemistry, 5th BBCAC, Fatsa, Ordu-Turkey (2009).

77. A. Karatepe, M. Soylak, L. Elçi, Determination of Cu, Fe and Ni By FAAS after Preconcentration on Diaion-HP20 Resin as their Zincon Complexes, PPII-45 (Ab 228), 5. Black Sea Basin Conference on Analytical Chemistry, 5th BBCAC, Fatsa, Ordu-Turkey (2009).

78. C. Duran, D. Özdeş, V.N. Bulut, M. Tüfekçi, M. Soylak, Cloud Point Extraction of Rhodamine 6G by Using Triton X-100 as Nonionic Surfactant, PPII-46 (Ab 268), 5. Black Sea Basin Conference on Analytical Chemistry, 5th BBCAC, Fatsa, Ordu-Turkey (2009).

79. D. Özdeş, A. Gündoğdu, H.B. Şentürk, M. Soylak, A Cloud Point Extraction Approach by Using Triton X-100 for Removal of 4-Chlorophenol from Aqueous Solutions, PPII-47 (Ab 270), 5. Black Sea Basin Conference on Analytical Chemistry, 5th BBCAC, Fatsa, Ordu-Turkey (2009).

80. İ. Narin, S. Çandir, M. Soylak, Seperation and Preconcentration of Pb(II) and Bi(III) Using an Anionic Surfactant without Ligand, PPII-51 (Ab 282), 5. Black Sea Basin Conference on Analytical Chemistry, 5th BBCAC, Fatsa, Ordu-Turkey (2009).

81. M. Soylak, Coprecipitation for the Preconcentration of Heavy Metal Ions at Trace Level for Atomic Absorption Spectrometric Determinations, Invited Lecture (IL-8), The 2nd Pak-Turk Seminar on Chemical Sciences (2nd PTSCS) Jamshoro, Hydrabad-Pakistan (2010).

82. Ü. Divrikli, A. Akdoğan, A. Hol, M. Soylak, L. Elçi, Determination of Chromium (VI) in Enviromental Samples by Electrothermal Atomic Absorption Spectrometry after Leaching with Sodium Carbonate, P-9, The 36th International Symposium on Environmental Analytical Chemistry (ISEAC 36), Rome-Italy (2010).

83. İ. Narin, D. Çıtak, M. Tüzen, E. Yılmaz, M. Soylak, Trace Element Levels of Organically Produced Some Medicinal Plant Samples from Turkey, A18, First International Conference on Organic Food Quality, Prague, Czech Republic (2011).

84. E. Yılmaz, İ. Narin, D. Çitak, M. Tüzen, M. Soylak, Trace Element Levels of Organic Legumes and Macaroni Samples Produced in Turkey, A19, First International Conference on Organic Food Quality, Prague, Czech Republic (2011).

85. Z.A. ALOthman, M. Habila_, E. Yilmaz, M. Soylak, Solid Phase Extraction of Cd(II), Pb(II), Zn(II), Cu(II), Co(II) and Ni(II) in Environmental Samples on4-(2-Thiazolylazo) Resorcinol Impregnated Multiwalled Carbon Nanotube, POA37, 219, The Fourth International Chemistry Conference, King Saud University, Riyadh, Saudi Arabia (2011).

86. Z.A. ALOthman, M. Habila, Y.E. Unsal, _, A. Shabaka, M. Tuzen, M. Soylak, Membrane Filtration of Sudan Orange G on Cellulose Acetate Membrane FilterPrior To Its Determination in Natural Water Samples, POA36, 218, The Fourth International Chemistry Conference, King Saud University, Riyadh, Saudi Arabia (2011).

87. M. Soylak, Solid Phase Extraction of Trace Metal Ions at Environmental Samples for their Separation and Preconcentration, 5^th Saudi Science Conference, WATER-OP1, Umm Al-Qura University, Makkah, Saudi Arabia (2012).

88. Ü. Divrikli, N. Elyas, M. Soylak, L. Elçi, Optimisation of Dispersive Liquid-Liquid Micro-Extraction for The Selective Determination of Trace Amounts of Antimony by Flame Atomic Absorption Spectrometry, I-32, The 37th International Symposium on Environmental Analytical Chemistry (ISEAC 37), Antwerp- Belgium (2012)

89. M. Soylak, Trends In Microextraction For Trace Level Concentration of Metals And Its Application To Environmental, Food And Biological Samples, Invited Lecture (IL-6), 3nd Pak-Turk Conference on Chemical Sciences (3PTSCS), 10, Bursa (2012).

90. F. Shah, M. Soylak, T.G. Kazi, H.I. Afridi, Single Step In-Syringe System for Ionic Liquid Based Liquid Microextraction Combined With Flame Atomic Absorption Spectrometry For Lead Determination, 3nd Pak-Turk Conference on Chemical Sciences (3PTSCS), 24, Bursa (2012).

91. S.K. Wadhwa, M. Tuzen, T.G. Kazi, M. Soylak, Z. Akkirman, B. Hazer, A Novel Block Copolymer For Solid Phase Extraction Of Lead And Copper In Biological Samples, 3nd Pak-Turk Conference on Chemical Sciences (3PTSCS), 25, Bursa (2012).

92. F. Shah, M. Soylak, T.G. Kazi, Preconcentration Of Lead From Aqueous Solution With Activated Carbon Cloth Prior To Analysis By Flame Atomic Absorption Spectrometry: A Multivariate Study, 3nd Pak-Turk Conference on Chemical Sciences (3PTSCS), 94, Bursa (2012).

93. G.A. Kandhro, M. Soylak, T.G. Kazi, E. Yılmaz, H.I. Afridi, Enrichment and Determination Of Cadmium And Copper In Biological Samples Followed By Room Temperature Ionic Liquid Microextraction With Flame Atomic Absorption Spectrometry, 3nd Pak-Turk Conference on Chemical Sciences (3PTSCS), 98, Bursa (2012).

94. M. Tuzen, Y.E. Ünsal, M. Soylak, Z. Akkirman, B. Hazer, Solid Phase extraction of lead and copper on a novel block copolymer disk and flame atomic absorption spectrometric determination of its in water and food samples, European Symposium on Atomic Spectrometry ESAS 2012, High Tatras, Slovakia (2012).

96. M. Soylak, Microextraction Techniques for Metal Ions, 11th International and 23rd National Chemistry Conference, Plenary Lecture, 3-4, Peshawar, Pakistan (2012).

97. F. Shah, M. Soylak, T.G. Kazi, Preconcentration Of Lead From Aqueous Solution With Activated Carbon Cloth Prior To Analysis By Flame Atomic Absorption Spectrometry: A Multivariate Study, 11th International and 23rd National Chemistry Conference, 92, Peshawar, Pakistan (2012).

98. Z.A. ALOthman, E. Yilmaz, M. Habila, A. Shabaka, M. Soylak, Saç örneklerinde bulunan kurşun’un zenginleştirilmesi ve tayini için iyonik sıvı mikroekstraksiyonu- alevli atomik absorpsiyon spektroskopisi kombinasyonu, 1st International Conference on Chemistry and Chemical Engineering (CCE2013), 63, Baku, Azerbaijan (2013).

99. M. Tuzen, Y.E. Unsal, M. Soylak, Dispersive liquid–liquid micro extraction of chromium(III) and chromium(VI) for preconcentration and atomic absorption spectrometric detection in water, food and environmental samples, 1st International Conference on Chemistry and Chemical Engineering (CCE2013), 181, Baku, Azerbaijan (2013).

100. Z.A. ALOthman, M. Habila, E. Yilmaz, M. Soylak, Cu(II)’nin dispersif sıvı-sıvı mikroekstraksiyonu, 1st International Conference on Chemistry and Chemical Engineering (CCE2013), 178, Baku, Azerbaijan (2013).

101. U. Divrikli, M. Soylak, L. Elci, Heavy metal content of some spices and herbal plants from Turkey, 2nd International Symposium on Green Chemistry Renewable carbon and Eco-Efficient Processes, 1081, La Rochelle, France (2013).