<?xml version="1.0" encoding="UTF-8"?><toc><section id="foreword.nat"><title>Nationales Vorwort</title></section><section id="foreword.reg"><title>Vorwort</title></section><section id="sub-endorsement.notice"><title>Anerkennungsnotiz</title></section><section id="sub-1"><label>1</label><title>Anwendungsbereich und Zweck</title></section><section id="sub-2"><label>2</label><title>Normative Verweisungen</title></section><section id="sub-3"><label>3</label><title>Prinzip</title></section><section id="sub-4"><label>4</label><title>Reagenzien</title></section><section id="sub-5"><label>5</label><title>Geräte</title></section><section id="sub-6"><label>6</label><title>Probenahme und Proben</title></section><section id="sub-7"><label>7</label><title>Durchführung</title><section id="sub-7.1"><label>7.1</label><title>Prüfmenge</title></section><section id="sub-7.2"><label>7.2</label><title>Blindversuch</title></section><section id="sub-7.3"><label>7.3</label><title>Vorbereitung des Tiegels</title></section><section id="sub-7.4"><label>7.4</label><title>Herstellung der Probelösung</title></section><section id="sub-7.5"><label>7.5</label><title>Bestimmung</title></section></section><section id="sub-8"><label>8</label><title>Darstellung der Ergebnisse</title><section id="sub-8.1"><label>8.1</label><title>Berechnung</title></section><section id="sub-8.2"><label>8.2</label><title>Präzision</title><section id="sub-8.2.1"><label>8.2.1</label><title>Laborprüfungen</title></section><section id="sub-8.2.2"><label>8.2.2</label><title>Statistische Ergebnisse</title></section></section></section><section id="sub-9"><label>9</label><title>Prüfbericht</title></section><section id="sub-a"><label>Anhang A</label><title>Bestimmung des Nickels in den vereinigten Filtraten mit Hilfe der Atomabsorptionsspektrometrie (normativ)</title><section id="sub-a.1"><label>A.1</label><title>Allgemeines</title></section><section id="sub-a.2"><label>A.2</label><title>Reagenzien</title><section id="sub-a.2.2"><label>A.2.2</label><title>Nickel-Standardlösung, die 0,1 g Ni je Liter entspricht</title></section></section><section id="sub-a.3"><label>A.3</label><title>Geräte</title></section><section id="sub-a.4"><label>A.4</label><title>Durchführung</title><section id="sub-a.4.1"><label>A.4.1</label><title>Einstellung des Atomabsorptionsspektralfotometers</title></section><section id="sub-a.4.2"><label>A.4.2</label><title>Herstellung der Reihe von Eichlösungen</title></section><section id="sub-a.4.3"><label>A.4.3</label><title>Messungen der Atomabsorption</title></section><section id="sub-a.4.4"><label>A.4.4</label><title>Aufstellen der Eichkurve</title></section></section><section id="sub-a.5"><label>A.5</label><title>Darstellung der Ergebnisse</title></section></section><section id="sub-b"><label>Anhang B</label><title>Statistischer Bericht aus den Ringversuchen (informativ)</title><section id="sub-b.0"><label>B.0</label><title>Einführung</title></section><section id="sub-b.1"><label>B.1</label><title>Informative Verweisungen</title></section><section id="sub-b.2"><label>B.2</label><title>Definitionen</title></section><section id="sub-b.3"><label>B.3</label><title>Aufbau des Prüfprogramms</title></section><section id="sub-b.4"><label>B.4</label><title>Prüfproben</title></section><section id="sub-b.5"><label>B.5</label><title>Änderungen im Analyseablauf</title></section><section id="sub-b.6"><label>B.6</label><title>Statistische Verfahren</title><section id="sub-b.6.1"><label>B.6.1</label><title>Statistische Tests auf Ausreißer</title></section><section id="sub-b.6.2"><label>B.6.2</label><title>Analyse der Varianz von Probe zu Probe</title></section><section id="sub-b.6.3"><label>B.6.3</label><title>Analyse der Varianz in Gruppen von vier Proben</title></section></section></section><section id=""><title>Zitierte Normen</title></section></toc>