12 JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, FEBRUARY 1987, VOL. 2 Future Issues will lnclude- The March Special Issue of JAAS will contain over 30 papers from the Third Biennial National Atomic Spectroscopy Symposium, Bristol, UK, July, 1986. The April issue will contain the following papers. Determination of Trace Amounts of Thorium and Uranium in Coal Ash by ICP-AES after TTA Extraction and Back-extraction with Dilute Nitric Acid- Eijiro Kamata The Determination of Rare Earth Ele- ments in Geological Samples by ICP- MS-A. R. Date and D. Hutchison Direct Determination of Cadmium in Urine by Electrothermal Atomisation Atomic Absorption Spectrometry-D. J. Halls, M. M. Black, G. S. Fell and (the late) J. M. Ottaway Plasma Potential Measurements for ICP- MS with a Centre-tapped Load Coil- R.S. Houk, J. K. Schoer and J. s. Crain Determination of Trace Metals in Marine Sediments by ICP-MS-J. W. McLaren, D. Beauchemin and S. S. Berman Direct Atomic Spectrometric Analysis by Slurry Atomisation. Part 2. Whole Coal Analysis by Inductively Coupled Plasma Atomic Emission Spectrometry-L. Ebdon and J. R. Wilkinson Determination of Phosphorus by Graph- ite Furnace Atomic Absorption Spec- trometry. Part 3. Analysis of Biological Materials-A. J. Curtius, G. Schlemmer and B. Welz Determination of Sulphur Compounds by Fully Automated Molecular Emission Cavity Analysis-N. P. Emiridis and A. Townshend The Use of a Thermospray Nebuliser as a Sample Introduction System for Induc- tively Coupled Plasma Atomic Emission Spectrometry (ICP-AES)-K. A.Ver- meiren, P. D. P. Taylor and R. Dams The Determination of Copper in Biolog- ical Microsamples by Direct Solid Samp- ling Graphite Furnace Atomic Absorp- tion Spectrometry-L. Ebdon and E. Hywel Evans Comparison of Interferences and Matrix Modifiers in the Determination of Gold by Electrothermal Atomisation Atomic Absorption Spectrometry with Zeeman- effect Background Correction- J. Egila, D. Littlejohn, (the late) J. M. Ottaway and Shan Xiao-quan Direct Determination of Gold in Whole Blood and Plasma by Electrothermal Atomisation Atomic Absorption Spec- trometry Using Zeeman-effect Back- ground Correction and Matrix Modifica- tions-Shan Xiao-quan, J. Egila, D. Lit- tlejohn and (the late) J. M. Ottaway Removal of Phosphate and Silicate Inter- ferences in the Determination of Magne- sium, Calcium and Strontium by Atomic Absorption Spectrometry-M. M. El- Defrawy, M. E. Khalifa, A. M. Abdallah and M. A. Akl Atomic Spectrometry Update The Update in the April issue is-Clinical and Biological Materials, Foods and Beverages-Alistair A. Brown, David J. Halls and Andrew Taylor