PMID- 26028670 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201001 IS - 0003-813X (Print) IS - 1475-4754 (Electronic) IS - 0003-813X (Linking) VI - 56 IP - 5 DP - 2014 Oct TI - The Use of Neutron Analysis Techniques for Detecting The Concentration And Distribution of Chloride Ions in Archaeological Iron. PG - 841-859 AB - Chloride (Cl) ions diffuse into iron objects during burial and drive corrosion after excavation. Located under corrosion layers, Cl is inaccessible to many analytical techniques. Neutron analysis offers non-destructive avenues for determining Cl content and distribution in objects. A pilot study used prompt gamma activation analysis (PGAA) and prompt gamma activation imaging (PGAI) to analyse the bulk concentration and longitudinal distribution of Cl in archaeological iron objects. This correlated with the object corrosion rate measured by oxygen consumption, and compared well with Cl measurement using a specific ion meter. High-Cl areas were linked with visible damage to the corrosion layers and attack of the iron core. Neutron techniques have significant advantages in the analysis of archaeological metals, including penetration depth and low detection limits. FAU - Watkinson, D AU - Watkinson D AD - Department of Archaeology and Conservation, Cardiff University John Percival Building, Colum Drive, Cardiff, CF10 3EU, UK. FAU - Rimmer, M AU - Rimmer M AD - Department of Archaeology and Conservation, Cardiff University John Percival Building, Colum Drive, Cardiff, CF10 3EU, UK. FAU - Kasztovszky, Z AU - Kasztovszky Z AD - Centre for Energy Research, Hungarian Academy of Sciences H-1525 Budapest, P.O. Box 49, Hungary. FAU - Kis, Z AU - Kis Z AD - Centre for Energy Research, Hungarian Academy of Sciences H-1525 Budapest, P.O. Box 49, Hungary. FAU - Maroti, B AU - Maroti B AD - Centre for Energy Research, Hungarian Academy of Sciences H-1525 Budapest, P.O. Box 49, Hungary. FAU - Szentmiklosi, L AU - Szentmiklosi L AD - Centre for Energy Research, Hungarian Academy of Sciences H-1525 Budapest, P.O. Box 49, Hungary. LA - eng PT - Journal Article DEP - 20131017 PL - England TA - Archaeometry JT - Archaeometry JID - 101588960 PMC - PMC4439727 OTO - NOTNLM OT - Archaeological iron OT - Chloride OT - Conservation OT - Corrosion OT - Elemental analysis OT - Neutron radiography OT - Neutron tomography OT - PGAA OT - PGAI EDAT- 2015/06/02 06:00 MHDA- 2015/06/02 06:01 PMCR- 2015/05/21 CRDT- 2015/06/02 06:00 PHST- 2013/03/11 00:00 [received] PHST- 2013/08/19 00:00 [accepted] PHST- 2015/06/02 06:00 [entrez] PHST- 2015/06/02 06:00 [pubmed] PHST- 2015/06/02 06:01 [medline] PHST- 2015/05/21 00:00 [pmc-release] AID - 10.1111/arcm.12058 [doi] PST - ppublish SO - Archaeometry. 2014 Oct;56(5):841-859. doi: 10.1111/arcm.12058. Epub 2013 Oct 17.