Analytical info

General introduction

Topic	Empty template	Finalized sheet
method comparisons	(MC)	MC1: SO4 - Comparison of ICP-, IC- and spectrophotometric determination in colored soil solutions MC2: Comparison of pH measurements in soils according to ISO 10390 and DIN 19684-1 MC3: Comparison of HTCO CLD and PO UV-220 nm oxidation MC4: Influence of different acid mixtures in microwave digestion on the iron concentration determined by ICP-AES in foliage samples MC5: Aqua regia digestion, total digestion and nitric acid digestion for humus and soil samples
new methods	(NM)
material tests	(MT)	MT1: Leaching of PE-bottles MT2: Comparison of two wet-only samplers: ANDERSEN and EIGENBRODT UNS 130
sample pretreatment and storage	(SP)	SP1: Pair-wise comparison of filtered and not filtered precipitation samples SP2: Storage of soil water and depo samples under diferent conditions SP3: Influence of filtration on TOC content in different water samples
technical information	(TI)

Analytical information from meetings of the Working Group and heads of the labs

Quality Control

N. König: Quality Assurance and Quality Control in Laboratories – a review

R. Mosello: DOC in ion balances of deposition solutions

R. Mosello: Excel sheet for testing water chemical analysis

M. Barbaste: Design and use of control and reference material for plant analysis

K. Derome: Use of control charts as QA/QC tool

R. Mosello: QA/QC for water samples

R. Mosello, N. König: QA/QC for water samples with DOC

A. Fürst: Plausible Ranges for Foliar and Litterfall Analyses

B. De Vos: Plausible Ranges for Soil Analyses

S. Kostrova et al.: Tolerable limits for total elements in soil (example of Fe)

A. Marchetto et al.: Detection/quantification limits – determination and use

Sample Storage

N. Cools: Longterm storage of soil samples

F. Mutsch: Experimental Design to Detect Chemical Changes of Forest Soils During Long-term Storage

Sample Preparation

de Cinti at al.: From sampling to chemical determination: at which step the possible mistakes?

M. Barbaste, T.Dalix, S. Desalme, P. Soulé, D. Orignac: Grinding plant samples: a critical risk of contamination

Analytical Methods for Digestions, Extractions

B. Heil: Differencies between Hungarian and European soil analyses methods in forestry

Exchangeable Cations with BaCl2-Extraktion

J. Durkovicova: Exchangeable ion determinations in BaCl2

M. Kantola et al.: Problems in soil analysis: exchangeable cations and acidity

P. O´Dea et al.: Mouldy problems and more with CEC determination

Aqua Regia Digestion

N. Proix: Application of microwave assisted Aqua Regia extraction to soil samples

N. König: HNO3-pressure and HNO3-microwave digestion for humus samples

N. König: Measuring of elements in aqua regia digestion solutions with ICP

P. O´Dea et al.: Hot issues with Aqua Regia

Microwave Digestion for plant material

D. Krupova: Problems with the digestion of foliage samples

Total Digestion

F. Mutsch et al.: Total Digestion versus XRF Analysis

Analytical Methods for the Determination of Parameters

Alkalinity

R. Mosello: Problems related to measurements of low value of alkalinity

G. Tartari et al.: Measurement of low values of total alkalinity

Atomic Absorption

P. Michopoulos: Problems with calibration of FAAS for metals

Carbonate

de la Cruz et al.: Why use calcimeter method and not titration method for measured carbonates?

C total

A. Fürst: Calibration of Element-Analyzers (LECO CN 2000, CNS 2000 and SC 432)

A. Fürst: Determination of Ca and K with Flame-AAS

DOC

A. Kowalska, Z. Ciesla: DOC and TN determination: acomparison of instruments from Elementar and Shimadzu

Free H+

A. de la Cruz: How improve the H+ measured in CIC in basic soils?

ICP

N. Koenig: Calibration for potassium measurements at low concentrations
J. Durkovicova:Comparison of LOD/LOQ for ICP measurements in water samples with and without ultrasonic nebulizer

Ion Chromatography

B. Nenkova: Ion chromatography in water with low contamination

G. Tartari et al.: Analytical aspects comparison DTN and IC determinations

G. Tartari, A. Marchetto: Calibration for ammonium and sulfate measurements at low concentrations

N. Koenig:Calibration for potassium measurements at low concentrations

A. Fürst: Determination of Ca and K with Flame-AAS

Moisture

C. Iacoban: Importance of the accurate determination of moisture for soil and needles/leaves samples for the final results

N total

A. de la Cruz: Problems in total nitrogen determination in water

G. Tartari et al.: Analytical aspects comparison DTN and IC determinations

A. Fürst: Calibration of Element-Analyzers (LECO CN 2000, CNS 2000 and SC 432)

D. Zlindra: Measurement of total N in Water – problems with high blanks

D. Zlindra: Total N in water – problem solved

J. E. Jacobsen: Differences between results from N-determination by Kjeldahl method and combustion methods

N. Koenig: Determination of total N

P. Michopoulos: Total N in waters by the Kjeldahl method. Statistical problems

A. Kowalska, Z. Ciesla: DOC and TN determination: acomparison of instruments from Elementar and Shimadzu

NO3

C. Iacoban: N-NH4 and N-NO3 concentrations in water samples

NH4

C. Iacoban: N-NH4 and N-NO3 concentrations in water samples

A. Velcheva et al.: Determination of clay, silt and total phosphorus in soil samples

P. Michopoulos: Colorimetric determination of P in digested plant material

F. Symossek: pH-Determination

F. Mutsch: Potassium in Aqueous Solutions after pH-Measurement

D. Zlindra: Differences in measurement of soil pH: ISO 10390:2005 vs. ISO 10390:1994

Soil Physics

particle size

A. Velcheva et al.: Determination of clay , silt and total phosphorus in soil samples