<?xml version="1.0" encoding="UTF-8"?><toc><section id="foreword.nat"><title>Nationales Vorwort</title></section><section id="foreword.reg"><title>Europäisches Vorwort</title></section><section id="sub-endorsement.notice"><title>Anerkennungsnotiz</title></section><section id="foreword.int"><title>Vorwort</title></section><section id="sub-1"><label>1</label><title>Anwendungsbereich</title></section><section id="sub-2"><label>2</label><title>Normative Verweisungen</title></section><section id="sub-3"><label>3</label><title>Begriffe</title></section><section id="sub-4"><label>4</label><title>Kurzbeschreibung</title></section><section id="sub-5"><label>5</label><title>Reagenzien</title></section><section id="sub-6"><label>6</label><title>Geräte und Materialien</title><section id="sub-6.8"><label>6.8</label><title>Zentrifuge.</title></section><section id="sub-6.9"><label>6.9</label><title>Horizontal bewegbare mechanische Schütteleinrichtung.</title></section></section><section id="sub-7"><label>7</label><title>Herstellen des Prüfstücks</title></section><section id="sub-8"><label>8</label><title>Durchführung</title><section id="sub-8.1"><label>8.1</label><title>Allgemeines</title></section><section id="sub-8.2"><label>8.2</label><title>Herstellung der Natriumtetraethylboratlösung</title></section><section id="sub-8.3"><label>8.3</label><title>Herstellung der Standardlösungen</title><section id="sub-8.3.1"><label>8.3.1</label><title>Allgemeines</title></section><section id="sub-8.3.2"><label>8.3.2</label><title>Interne Standard-Stammlösung (100 mg/l des zinnorganischen Kations)</title></section><section id="sub-8.3.3"><label>8.3.3</label><title>Interne Standard-Arbeitslösung (10 mg/l des zinnorganischen Kations)</title></section><section id="sub-8.3.4"><label>8.3.4</label><title>Zielverbindung-Stammlösung (1000 mg/l des zinnorganischen Kations)</title></section><section id="sub-8.3.5"><label>8.3.5</label><title>Zielverbindung-Arbeitslösung (10 mg/l des zinnorganischen Kations)</title></section></section><section id="sub-8.4"><label>8.4</label><title>Herstellung der Tropolon-Lösung</title></section><section id="sub-8.5"><label>8.5</label><title>Herstellung der Pufferlösung</title></section><section id="sub-8.6"><label>8.6</label><title>Herstellung der Kalibrierlösungen</title></section><section id="sub-8.7"><label>8.7</label><title>Probenvorbereitung</title></section><section id="sub-8.8"><label>8.8</label><title>Herstellung der Blindlösung</title></section><section id="sub-8.9"><label>8.9</label><title>Gaschromatographie</title></section></section><section id="sub-9"><label>9</label><title>Auswertung</title><section id="sub-9.6"><label>9.6</label><title>Nachweisgrenze und Bestimmungsgrenze</title></section></section><section id="sub-10"><label>10</label><title>Prüfbericht</title></section><section id="sub-a"><label>Anhang A</label><title>Für die Analyse zinnorganischer Verbindungen mittels Gaschromatographie-Massenspektrometrie (GC-MS) empfohlene Bedingungen (informativ)</title></section><section id="sub-b"><label>Anhang B</label><title>Zuverlässigkeit des Verfahrens (informativ)</title></section><section id="sub-annex.bibliography.int"><title>Literaturhinweise (informativ)</title></section><section id="sub-na"><label>Nationaler Anhang NA</label><title>Literaturhinweise (informativ)</title></section></toc>