How to Efficiently Produce Ultrapure Acids
Subboiling distillation has been used since two decades for the purification of analytical grade acids from inorganic contaminants and demonstrated an efficient method to obtain pure acids starting from reagent grade chemicals. Nevertheless, the effect of the subboiling parameters on the purity of t...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | International Journal of Analytical Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2019/5180610 |
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| author | Damiano Monticelli Alessio Castelletti Davide Civati Sandro Recchia Carlo Dossi |
| author_facet | Damiano Monticelli Alessio Castelletti Davide Civati Sandro Recchia Carlo Dossi |
| author_sort | Damiano Monticelli |
| collection | DOAJ |
| description | Subboiling distillation has been used since two decades for the purification of analytical grade acids from inorganic contaminants and demonstrated an efficient method to obtain pure acids starting from reagent grade chemicals. Nevertheless, the effect of the subboiling parameters on the purity of the distilled acids has never been methodically investigated. Aim of the present research is a systematic evaluation of the subboiling distillation protocol for the production of pure hydrochloric and nitric acid. In particular, the effect of the subboiling temperature and the number of subsequent distillations was investigated as these parameters were recognised as the most important factors controlling acid purity, acid concentration, and distillation yield. The concentration of twenty elements in the purified acids was determined by Inductively Coupled Plasma-Mass Spectrometry. As a result, the subboiling temperature (up to 82°C) and the number of subsequent distillations (up to four) were demonstrated not to affect the purity of the distilled nitric and hydrochloric acids. Under normal laboratory conditions, the residual elemental concentrations were in most cases below 10 ng/L in both nitric (2.75% w/w) and hydrochloric (0.1 M) blanks. Ultrapure nitric and hydrochloric acids could accordingly be produced under the most favorable conditions, i.e., the highest temperature and one distillation process only. |
| format | Article |
| id | doaj-art-5f4f979dc9dd45e5b0bead54b564dca1 |
| institution | Kabale University |
| issn | 1687-8760 1687-8779 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Analytical Chemistry |
| spelling | doaj-art-5f4f979dc9dd45e5b0bead54b564dca12025-02-03T06:00:22ZengWileyInternational Journal of Analytical Chemistry1687-87601687-87792019-01-01201910.1155/2019/51806105180610How to Efficiently Produce Ultrapure AcidsDamiano Monticelli0Alessio Castelletti1Davide Civati2Sandro Recchia3Carlo Dossi4Dipartimento di Scienza e Alta Tecnologia, Università degli Studi dell’Insubria, Via Valleggio 11, 22100 Como, ItalyDipartimento di Scienza e Alta Tecnologia, Università degli Studi dell’Insubria, Via Valleggio 11, 22100 Como, ItalyDipartimento di Scienza e Alta Tecnologia, Università degli Studi dell’Insubria, Via Valleggio 11, 22100 Como, ItalyDipartimento di Scienza e Alta Tecnologia, Università degli Studi dell’Insubria, Via Valleggio 11, 22100 Como, ItalyDipartimento di Scienze Teoriche e Applicate, Università degli Studi dell’Insubria, Via J.H. Dunant 3, 21100 Varese, ItalySubboiling distillation has been used since two decades for the purification of analytical grade acids from inorganic contaminants and demonstrated an efficient method to obtain pure acids starting from reagent grade chemicals. Nevertheless, the effect of the subboiling parameters on the purity of the distilled acids has never been methodically investigated. Aim of the present research is a systematic evaluation of the subboiling distillation protocol for the production of pure hydrochloric and nitric acid. In particular, the effect of the subboiling temperature and the number of subsequent distillations was investigated as these parameters were recognised as the most important factors controlling acid purity, acid concentration, and distillation yield. The concentration of twenty elements in the purified acids was determined by Inductively Coupled Plasma-Mass Spectrometry. As a result, the subboiling temperature (up to 82°C) and the number of subsequent distillations (up to four) were demonstrated not to affect the purity of the distilled nitric and hydrochloric acids. Under normal laboratory conditions, the residual elemental concentrations were in most cases below 10 ng/L in both nitric (2.75% w/w) and hydrochloric (0.1 M) blanks. Ultrapure nitric and hydrochloric acids could accordingly be produced under the most favorable conditions, i.e., the highest temperature and one distillation process only.http://dx.doi.org/10.1155/2019/5180610 |
| spellingShingle | Damiano Monticelli Alessio Castelletti Davide Civati Sandro Recchia Carlo Dossi How to Efficiently Produce Ultrapure Acids International Journal of Analytical Chemistry |
| title | How to Efficiently Produce Ultrapure Acids |
| title_full | How to Efficiently Produce Ultrapure Acids |
| title_fullStr | How to Efficiently Produce Ultrapure Acids |
| title_full_unstemmed | How to Efficiently Produce Ultrapure Acids |
| title_short | How to Efficiently Produce Ultrapure Acids |
| title_sort | how to efficiently produce ultrapure acids |
| url | http://dx.doi.org/10.1155/2019/5180610 |
| work_keys_str_mv | AT damianomonticelli howtoefficientlyproduceultrapureacids AT alessiocastelletti howtoefficientlyproduceultrapureacids AT davidecivati howtoefficientlyproduceultrapureacids AT sandrorecchia howtoefficientlyproduceultrapureacids AT carlodossi howtoefficientlyproduceultrapureacids |