1. M. Soylak, L. Elçi, M. Doğan, Spectrophotometric Determination of Tungsten in Hot Spring Waters after Adsorptive Preconcentration on Amberlite XAD-7, Euroanalysis VIII, Edinburgh, UK, PG 27 (1993).
2. M. Soylak, İ. Narin, L. Elçi, M. Doğan, A New Method for Enrichment and Separation of Some Trace Metals in Urine Samples on an Activated Carbon Column, ISTERH 5. International Conference-Lyon, France, Journal of Trace Elements in Experimental Medicine, 11, 474-475 (1998).
3. M. Soylak, L. Elçi, M. Doğan, Solid Phase Extraction of Trace Metal Ions with Amberlite XAD Resins Prior to AAS Analysis,Colloquium Spectroscopium Internationale XXXI, Ankara, Invited Lecture, p55 (1999).
4. M. Soylak, L. Elçi, M. Doğan, Determination of Gold, Silver and Palladium by Flame Absorption Spectrometry after their Sorbent Extractions with an Activated Carbon Column, Colloquium Spectroscopium Internationale XXXI, Ankara, p182 (1999).
5. İ. Narin, M. Soylak, L. Elçi, M. Doğan, Determination of Some Trace Metal Ions in Natural Water Samples on an Activated Carbon Column as Pryrocatecol Violet Complexes, Colloquium Spectroscopium Internationale XXXI, Ankara, p183 (1999).
6. M. Soylak, O. Türkoğlu Spectrophotometric Determination of Samarium (III) with Chrome Azurol S in the Presence of Cetylpyridinum Chloride, Colloquium Spectroscopium Internationale XXXI, Ankara, p264 (1999).
7. Ü. Divrikli, M. Soylak, L. Elçi, Determination of Chromium by Atomic Absorption Spectrometry Following Coprecipitation with Cerium (IV) Hydroxide, 3rd Mediterranean Basin Conference on Analytical Chemistry, MBCAC III, Antalya, p145 (2000).
8. M. Soylak, Y. Akkaya, L. Elçi, Determination of Some Metal Contents of Roadside Soils from Yozgat-Turkey, 3rd Mediterranean Basin Conference on Analytical Chemistry, MBCAC III, Antalya, p229 (2000).
9. İ. Narin, M. Soylak, L. Elçi, M. Doğan, Determination of Some Metal Ions in Bottled Mineral Waters and Table Salt Samples after Preconcentration on Activated Carbon, 3rd Mediterranean Basin Conference on Analytical Chemistry, MBCAC III, Antalya, p236 (2000).
10. A. Uzun, M. Soylak, L. Elçi, Preconcentration of Some Trace Metal Ions from Waste Waters Using Amberlite XAD-4, 3rdMediterranean Basin Conference on Analytical Chemistry, MBCAC III, Antalya, p267 (2000).
11. M. Soylak, L. Elçi, İ. Narin, Y. Akkaya, M. Doğan, Application of Solid Phase Extraction for the Preconcentration of Cobalt from Urine, 3rd Mediterranean Basin Conference on Analytical Chemistry, MBCAC III, Antalya, p272 (2000).
12. S. Saraçoğlu, M. Soylak, L. Elçi, Speciation of Antimony in Water Samples Using a Column Filled Chromosorb 102 resin, 3rdMediterranean Basin Conference on Analytical Chemistry, MBCAC III, Antalya, p273 (2000).
13. M. Doğan, M. Soylak, L. Elçi, A. Von Bohlen, Total Reflection X-Ray Fluorescence Analysis and Application in Biological System and Textile Industry, 2nd Aegean Analytical Chemistry Days, Invited Lecture, Ayvalık, p43 (2000).
14. S. Saraçoğlu, Ü. Divrikli, M. Soylak, F. Armağan, L. Elçi, Determination of Some Metal Ions by AAS in Baking Powder and Baking Soda Samples after Preconcentration and Separation, 2nd Aegean Analytical Chemistry Days, Ayvalık, p53 (2000).
15. M. Soylak, L. Elçi, İ. Narin, M. Doğan, Separation and Preconcentration of Gold, Silver and Palladium from Some Aluminum and Manganese Salts on an Activated Carbon Column, 2nd Aegean Analytical Chemistry Days, Ayvalık, p98 (2000).
16. İ. Narin, M. Soylak, L. Elçi, M. Doğan, Trace Separation/Enrichment and Atomic Absorption Spectrometric Determination of Some Metal Ions on Amberlite XAD-2000, 2nd Aegean Analytical Chemistry Days, Ayvalık, p99 (2000).
17. M. Soylak, F. Armağan, L. Elçi, M. Doğan, Column Chromatographic Preconcentration and Separation of Some Metal Ions on Diaion HP-20 Resin, 2nd Aegean Analytical Chemistry Days, Ayvalık, p100 (2000).
18. M. Soylak, S. Saraçoğlu, L. Elçi, M. Doğan, Atomic Absorption Spectrometric Determination of Trace Amounts of Some Metal Ions after Preconcentration with Calmagite on Amberlite XAD-1180, Colloquium Spectroscopium Internationale XXXII, Johannesburg, South Africa, P3-1 (2001).
19. M. Soylak, Ü. Divrikli, L. Elçi, M. Doğan, Preconcentration of Some Metal Ions on Soluble Membrane Filters Prior to their Atomic Absorption Spectrometric Determinations, Colloquium Spectroscopium Internationale XXXII, Johannesburg, South Africa, P3-8, (2001).
20. M. Doğan, M. Soylak, L. Elçi, A. Von Bohlen, Total Reflection X-Ray Fluorescence Analysis and It’s Application in Textile Industry,Colloquium Spectroscopium Internationale XXXII, Johannesburg, South Africa, TH1-2 (2001).
21. M. Doğan, L. Elçi, M. Soylak, Comparison of AAS and Total Reflection X-Ray Fluorescence Methods by Analysis of Trace Elements of Textile Material, 1. Black Sea Basin Conference on Analytical Chemistry, BBCAC I, Odessa-Ukraine, p41 (2001).
22. S. Saraçoğlu, M. Soylak, L. Elçi, M. Doğan, Flame Atomic Absorption Spectrometric Determination of Some Traces Metal Ions after Separation and Enrichment on Chromosorb 102, Euroanalysis XII, Dortmund-Germany, P1-240 (2002).
23. L. Elçi, M. Soylak, M. Doğan, Preconcentration of Trace Metal Ions by Solid Phase Extraction with Polymeric Resins for Flame Atomic Absorption Spectrometry, FACSS 30, Ft. Lauderdale, FL (2003).
24. M. Soylak, M. Tüzen, İ. Narin, Enrichment and Separation of Iron and Lead Ions in Environmental Matrices on XAD-1180/PV Resin,4th Aegean Analytical Chemistry Days, Kuşadası, P19 (2004).
25. M. Tüzen, H. Sarı, M. Soylak, Microwave and Wet Digestion Procedures for the Digestion of Sediment Samples for Trace Metal Analysis, 4th Aegean Analytical Chemistry Days, Kuşadası, P18-19 (2004).
26. Ü. Divrikli, D. Mendil, M. Tüzen, M. Soylak, L. Elçi, The Date Palm (Phoenix Dactylifera) as Biomonitor of Traces Heavy Metals in Denizli-Turkey, 4th Aegean Analytical Chemistry Days, Kuşadası, P20 (2004).
27. Ü. Divrikli, A.A. Kartal, M. Soylak, L. Elçi, Preconcentration of Trace Metal Ions by Membrane Filtration-Atomic Absorption Spectrometry Combination, 4th Aegean Analytical Chemistry Days, Kuşadası, P44 (2004).
28. Ü. Divrikli, A. Akdoğan, M. Soylak, L. Elci, Solid Phase Extraction of Lead, Iron and Chromium with XAD-7 Column for their Determinations by AAS, 4th Aegean Analytical Chemistry Days, Kuşadası, P46 (2004).
29. I. Narin, Y. Sürme, M. Soylak, M. Doğan, Speciation of Cr(III) and Cr(VI) by the Combination of Solid Phase Extraction and Spectrophotometry, 5th Mediterranean Basin Conference on Analytical Chemistry, MBCAC V, Silvi Marina, Teramo, Italy, p29 (2005).
30. O. Türkoğlu, M. Arı, S. Yılmaz, M. Soylak, İ. Belenli, Synthesis and Crystallographic properties of the tetragonal type Bi(III)2-2xHo(II)2xO3-xðx Solid Solution, The 10th European Conference on Solid State Chemistry, Sheffield, United Kingdom, p70 (2005).
31. I. Narin, Y. Sürme, M. Soylak, M. Dogan, Determination of Chromium Species by Spectrophotometry after their Solid Phase Extraction,3. Black Sea Basin Conference on Analytical Chemistry, 3rd BBCAC, Constanta-Romania, p35 (2005).
32. Y. Sürme, I. Narin, H. Yuruk, M. Soylak, M. Dogan, Cloud Point Extraction, Preconcentration and Atomic Absorption Spectrometric Determination of Lead in Environmental Samples, 3. Black Sea Basin Conference on Analytical Chemistry, 3rd BBCAC, Constanta-Romania, p36 (2005).
33. Ü. Divrikli, B. Büke, M. Soylak, L. Elçi, Copper Determination in Water Samples Using Flow Injection On-Line Preconcentration and Flame Atomic Absorption Spectrometric Detection, 3. Black Sea Basin Conference on Analytical Chemistry, 3rd BBCAC, Constanta-Romania, p65 (2005).
34. M. Tüzen, M. Soylak, Determination of Trace Metals in Honey Samples from Middle Anatolia after Wet And Microwave Digestion Procedures, 3. Black Sea Basin Conference on Analytical Chemistry, 3rd BBCAC, Constanta-Romania, p71 (2005).
35. M. Soylak, Ü. Divrikli, S. Saracoğlu, L. Elçi, Separation-Preconcentration of Some Trace Elements by Membrane Filtration, 3. Black SeaBasin Conference on Analytical Chemistry, 3rd BBCAC, Constanta-Romania, p152 (2005).
36. D. Şahan, A. Elçi, M. Soylak, L. Elçi, Solid Phase Extraction of Gold (III) on Amberlite XAD-2000 for its Flame Atomic Absorption Spectrometric Determinations, 3. Black Sea Basin Conference on Analytical Chemistry, 3rd BBCAC, Constanta-Romania, p160 (2005).
37. M. Tüzen, M. Soylak, Solid Phase Extraction of Indium Prior to its Graphite Furnace Atomic Absorption Spectrometric Determination,3. Black Sea Basin Conference on Analytical Chemistry, 3rd BBCAC, Constanta-Romania, p176 (2005).
38. M. Tuzen, S. Silici, D. Mendil, M. Soylak, Trace Heavy Metal Levels in Honeys from Different Region of Anatolia, 1st Egyptian-Jordanian Conference, Cairo-Egypt, p43(2006).
39. K.O. Saygı, M. Tuzen, M. Soylak, L. Elci, Chromium speciation in environmental samples using Dowex M 4195 chelating resin, 11th Workshop on Progress in Analytical Methodologies for Trace Metal Speciation, p94, Münster-Germany (2007).
40. L. Elçi, Ü. Divrikli, M. Soylak, Inorganic arsenic speciation in various water samples with GF-AAS using coprecipitation, 11th Workshop on Progress in Analytical Methodologies for Trace Metal Speciation, p63, Münster-Germany (2007).
41. H. Karimi, M. Ghaedi, A. Shokrollahi, H. Rajabi, M. Soylak, Development of a Selective and Sensitive Flotation Method for Determination of Trace Amounts of Cobalt, Nickel, Copper and Iron in Environmental Samples, 2nd International Seminar on Analytical Sciences, Hyderabad, Pakistan (2007).
42. M. Ghaedi, A. Shokrollahi, A. H. Kianfar, A. Pourfarokhi, A.S. Mirsadeghi, H. R. Rajabi, M. Soylak, Simultaneous Preconcentration and Determination of Trace Amount of Some Heavy Metal Ions, 2nd International Seminar on Analytical Sciences, Hyderabad, Pakistan (2007).
43. M. Ghaedi, A. Shokrollahi, A.H. Kianfar, A. Pourfarokhi, A.S. Mirsadeghi, H.R. Rajabi, M. Soylak, Schiff base Modified Activated Carbon for Solid Phase Extraction and Determination of Trace Amount of Six Ions in Biological Samples, 2nd International Seminar on Analytical Sciences, Hyderabad, Pakistan (2007).
44. M. Soylak, Y.E. Unsal, Double Walled Carbon Nanotube as Solid Phase Extractor for Enrichment of Some Metal Ions, 6nd Aegean Analytical Chemistry Days, Karahayıt-Denizli, p427 (2008).
45. M. Soylak, Ö. Ercan, Solid Phase Extraction of Copper Ions on Multiwalled Carbon Nanotubes, 6nd Aegean Analytical Chemistry Days,Karahayıt-Denizli, p67 (2008).
46. U. Divrikli, A. Akdoğan, M. Soylak, L. Elçi, Factorial Design for Multivariate Optimization of Preconcentration System for Phosphorus Determination by Atomic Absorption Spectrometry, 6nd Aegean Analytical Chemistry Days, Karahayıt-Denizli, p77 (2008).
47. A. Duran, M. Tüzen, M. Soylak, Multiwalled Carbon Nanotubes as Solid Phase Extraction Adsorbent for the Preconcentration of Some Trace Elements, 6nd Aegean Analytical Chemistry Days, Karahayıt-Denizli, p127 (2008).
48. A. Gündoğdu, C. Duran, H.B. Şentürk, M. İmamoğlu, V.N. Bulut, M. Soylak, Removal of Cr(VI) from Wastewaters by a New Activated Carbon Prepared from Tea-Industry Waste, 6nd Aegean Analytical Chemistry Days, Karahayıt-Denizli, p128 (2008).
49. B. Kemer, A. Gündoğdu, V.N. Bulut, M. Soylak, Potentiometric Determination of Fluoride and Iodide in Kales (Brassica oleracea var. Acephala) Grown in Eastern Black Sea Region, 6nd Aegean Analytical Chemistry Days, Karahayıt-Denizli, p129 (2008).
50. A. Sari, D. Mendil, M. Tüzen, M. Soylak, Biosorption of Palladium(II) from aqueous Solution by Moss (Racomitrium Lanuginosum) Biomass: Equilibrium, Kinetic and Thermodynamic Studies, 6nd Aegean Analytical Chemistry Days, Karahayıt-Denizli, p141 (2008).
51. M. Tüzen, K.Ö. Saygı, M. Soylak, Arsenic Speciation on Alterneria Solani Loaded Diaion HP-2MG by Hydride Generation Atomic Absorption Spectrometric, 6nd Aegean Analytical Chemistry Days, Karahayıt-Denizli, p174 (2008).
52. M. Tüzen, O.D. Uluozlu, D. Mendil, M. Soylak, Preconcentration and Determination of Arsenic(III) and Arsenic(V) in Environmental Samples by Cloud Point Extraction and Hydride Generation Atomic Absorption Spectrometry, 6nd Aegean Analytical Chemistry Days,Karahayıt-Denizli, p181 (2008).
53. V.N. Bulut, C. Duran, Z. Bıyıklıoğlu, M. Tüfekçi, M. Soylak, A Novel Dibenzo-18-Crown-6 Derivative for the Liquid-liquid Exraction, Separation, Preconcentration, and Spectrophotometric Determination of Gold in Environmental Samples, 6nd Aegean Analytical Chemistry Days, Karahayıt-Denizli, p184 (2008).
54. S. Çandır, E. Özdemir, İ. Narin, M. Soylak, Solid Phase Extraction and Spectrophotometric Determination of Pantoprazole, 6nd Aegean Analytical Chemistry Days, Karahayıt-Denizli, p290 (2008).
55. V.N. Bulut, D. Ozdeş, O. Bekircan, A. Gundoğdu, C. Duran, M. Soylak, Carrier Element-Free Coprecipitation (CEFC) Method for Speciation of Chromium, 6nd Aegean Analytical Chemistry Days, Karahayıt-Denizli, p310 (2008).
56. B. Kemer, D. Özdeş, A. Gündoğdu, V.N. Bulut, C. Duran, M. Soylak, Removal of Fluoride Ions from Aqueous Solution by Waste Mud,6nd Aegean Analytical Chemistry Days, Karahayıt-Denizli, p314 (2008).
57. S. Saracoğlu, M. Soylak, L. Elçi, Determination of Extractable Trace Metal Contents in Air Filter Dust Samples Collected from Vehicle in Kayseri by Means of a Sequential Extraction Procedure,, 6nd Aegean Analytical Chemistry Days, Karahayıt-Denizli, p330 (2008).
58. A. Karatepe, E. Korkmaz, M. Soylak, L. Elçi, A New Approach for the Speciation of Chromium by Coprecipitaion, 6nd Aegean Analytical Chemistry Days, Karahayıt-Denizli, p330 (2008).
59. C. Duran, V.N. Bulut, A. Gundogdu, D. Ozdes, N. Yildirim, M. Soylak, H.B. Senturk, L. Elçi, Separation and Preconcentration of Cr(III), Fe(III), Pb(II) and Zn(II) with Carrier Element–Free Coprecipitation Method Using a Triazole, 6nd Aegean Analytical Chemistry Days, Karahayıt-Denizli, p359 (2008).
60. M. Tuzen, D. Cıtak, D.Mendil, M. Soylak, Separation and Speciation of Arsenic in Environmental Samples by the Combination of Aluminium Hydroxide Coprecipitation and Hydride Generation Atomic Absorption Spectrometric Determination, 6nd Aegean Analytical Chemistry Days, Karahayıt-Denizli, p360 (2008).
61. V.N. Bulut, A. Gundoğdu, C. Duran, O. Bekircan, M. Soylak, A New pH Indicator Based on Isatine Derivative, 6nd Aegean Analytical Chemistry Days, Karahayıt-Denizli, p370 (2008).
62. M. Dogan, M. Tuzen, A. Sarı, D. Mendil, O.D. Uluozlu, M. Soylak, Biosorption of As(III) from Aqueous Solution by Green Algae (Ulotrix cylindricum) Biomass: Equilibrium, Kinetic and Thermodynamic Studies, European Symposium on Atomic Spectrometry, ESAS 2008 Bauhaus-Universität Weimar, Germany (2008).
