<P>Preface.- <STRONG>1. Introduction.-</STRONG> 1.1 Organisation Of This Manual. 1.2 Technical Remarks. 1.3 Sampling And Pretreatment. <STRONG>2. Digestions.-</STRONG> 2.1 Digestion In Tubes With H<SUB>2</SUB>SO<SUB>4</SUB> - Salicylic Acid - H<SUB>2</SUB>O<SUB>2</SUB> And Selenium. For the determination of total Ca, K, Mg, Mn, N, N, Na, P and Zn. 2.2 Digestion In Flasks With H<SUB>2</SUB>SO<SUB>4</SUB> - Salicylic Acid - H<SUB>2</SUB>O<SUB>2</SUB>. For the determination of total Ca, K, Mg, Mn, N, Na, P, and Zn. 2.3 Microwave Digestion With HNO<SUB>3</SUB> - H<SUB>2</SUB>O<SUB>2 </SUB>- HF. For the determination of total Al, As, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, P, Pb, S, Sb, Sn, V and Zn. 2.4 Digestion With HNO<SUB>3</SUB> - H<SUB>2</SUB>O<SUB>2 </SUB>- HF.- For the determination of total Al, As, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, P, Pb, S, Sb, Sn, V and Zn. 2.5 Digestion With HNO<SUB>3</SUB>.- For the determination of total S. 2.6 Digestion With HNO<SUB>3</SUB> - HCLO<SUB>4</SUB> - H<SUB>2</SUB>SO<SUB>4</SUB>.- For the determination of total Cd, Cu, Fe, Mn and Zn. 2.7 Digestion By Dry-Ashing Followed By Treatment With HF.-For the determination of total Al, As, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, P, Pb, S, Sb, Sn, V and Zn. 2.8 Digestion By Dry-Ashing In The Presence Of CAO. For the determination of total B. <STRONG>3. Extractions.-</STRONG> 3.1 Extraction With Water. For the determination of Cl<SUP>-</SUP>, NO<SUB>2</SUB><SUP>-</SUP>, NO<SUB>3</SUB><SUP>-</SUP> and SO<SUB>4</SUB><SUP>2- </SUP>3.2 Extraction With HF - HCL. For the determination of total B and Si. <STRONG>4. Determinations.-</STRONG> <STRONG>4.1 Determination Of Aluminium.-</STRONG> 4.1.A Determination Of Aluminium By Spectrophotometry. 4.1.B Determination Of Aluminium By ICP-OES. 4.1.C Determination Of Aluminium By ICP-MS. <STRONG>4.2 Determination Of Arsenic.-</STRONG> 4.2.A Determination Of Arsenic By ICP-MS. <STRONG>4.3 Determination Of Boron.-</STRONG> 4.3.A Determination Of Boron By Spectrophotometry. 4.3.B Determination Of Boron By ICP-OES. <STRONG>4.4 Determination Of Calcium.-</STRONG> 4.4.A Determination Of Calcium By Flame AES. 4.4.B Determination Of Calcium By Flame AAS. 4.4.C Determination Of Calcium By ICP-OES. <STRONG>4.5 Determination Of Cadmium.-</STRONG> 4.5.A Determination Of Cadmium By Flame AAS. 4.5.B Determination Of Cadmium By ICP-OES. 4.5.C Determination Of Cadmium By ETA-AAS. 4.5.D Determination Of Cadmium By ICP-MS. <STRONG>4.6 Determination Of Chloride.-</STRONG> 4.6.A Determination Of Chloride By Coulometric Titration.<STRONG> 4.7 Determination Of Cobalt.-</STRONG> 4.7.A Determination Of Cobalt By ICP-OES. 4.7.B Determination Of Cobalt By ICP-MS. <STRONG>4.8 Determination Of Chromium.-</STRONG> 4.8.A Determination Of Chromium By ICP-OES. 4.8.B Determination Of Chromium By ICP-MS. <STRONG>4.9 Determination Of Copper.-</STRONG> 4.9.A Determination Of Copper By Flame AAS. 4.9.B Determination Of Copper By ICP-OES. 4.9.C Determination Of Copper By ETA-AAS. 4.9.D Determination Of Copper By ICP-MS. <STRONG>4.10 Determination Of Iron.-</STRONG> 4.10.A Determination Of Iron By Flame AAS. 4.10.B Determination Of Iron By ICP-OES. <STRONG>4.11 Determination Of Potassium.-</STRONG> 4.11.A Determination Of Potassium By Flame AES. 4.11.B Determination Of Potassium By ICP-OES. <STRONG>4.12 Determination Of Magnesium.-</STRONG> 4.12.A Determination Of Magnesium By Flame AAS. 4.12.B Determination Of Magnesium By ICP-OES. <STRONG>4.13 Determination Of Manganese.-</STRONG> 4.13.A Determination Of Manganese By Flame AAS. 4.13.B Determination Of Manganese By ICP-OES. 4.13.C Determination Of Manganese By ICP-MS. <STRONG>4.14 Determination Of Nitrogen Fractions.- </STRONG>4.14.A Determination Of Total Nitrogen By Spectrophotometry. 4.14.B Determination Of Total Nitrogen By SFA. 4.14.C Determination Of Nitrate (+ Nitrite) By SFA. 4.14.D Determination Of Nitrate-Nitrogen By ISE. 4.14.E Determination Of Nitrite By SFA. <STRONG>4.15 Determination Of Sodium.-</STRONG> 4.15.A Determination Of Sodium By Flame AES. 4.15.B Determination Of Sodium By ICP-OES. <STRONG>4.16 Determination Of Nickel.-</STRONG> 4.16.A Determination Of Nickel By Flame AAS. 4.16.B Determination Of Nickel By Flame AAS. 4.16.C Determination Of Nickel By ICP-MS. <STRONG>4.17 Determination Of Phosphorus.-</STRONG> 4.17.A Determination Of Total Phosphorus By Spectrophotometry. 4.17.B Determination Of Total Phosphorus By SFA. 4.17.C Determination Of Total Phosphorus By ICP-OES. <STRONG>4.18 Determination Of Lead.-</STRONG> 4.18.A Determination Of Lead By Flame AAS. 4.18.B Determination Of Lead By ICP-OES. 4.18.C Determination Of Lead By ETA-AAS. 4.18.D Determination Of Lead By ICP-MS. <STRONG>4.19 Determination Of Sulphur Fractions.-</STRONG> 4.19.A Determination Of Total Sulphur By ICP-OES. 4.19.B Determination Of Sulphate By ICP-OES. <STRONG>4.20 Determination Of Antimony.-</STRONG> 4.20.A Determination Of Antimony By ICP-MS. <STRONG>4.21 Determination Of Silicon.-</STRONG> 4.21.A Determination Of Silicon By ICP-OES. <STRONG>4.22 Determination Of Tin.-</STRONG> 4.22.A Determination Of Tin By ICP-MS. <STRONG>4.23 Determination Of Vanadium.-</STRONG> 4.23.A Determination Of Vanadium By ICP-MS. <STRONG>4.24 Determination Of Zinc.-</STRONG> 4.24.A Determination Of Zinc By Flame AAS. 4.24.B Determination Of Zinc By ICP-OES. 4.24.C Determination Of Zinc By ICP-MS.</P>
