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| AN-V-005 |
Selenium in a standard solution |
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| Determination of Se in a standard solution |
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| AN-S-182 |
Bromide and sulfur oxoanions in photographic developer solutions |
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| Determination of bromide, sulfite, sulfate and thiosulfate in a photographic developer solution using anion chromatography with conductivity detection after chemical suppression. |
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| AN-S-070 |
Trace anions in wastewater (photographic industry) using amperometric detection |
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| Determination of iodide and thiosulfate in photographic process wastewater using anion chromatography with amperometric detection at the carbon paste electrode after chemical suppression. |
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| AN-S-069 |
Chloride, bromide, sulfate in wastewater (photographic industry) |
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| Determination of chloride, bromide and sulfate in photographic process wastewater using anion chromatography with conductivity detection after chemical suppression. |
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| AN-S-067 |
Traces of chloride and sulfate in a developing bath |
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| Determination of traces of chloride and sulfate in a developing bath using anion chromatography with conductivity detection after chemical suppression. |
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| AN-O-028 |
Citrate, ascorbate and acetate in photographic developer solution |
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| Determination of citrate, ascorbate and acetate in photographic developer solution using ion exclusion chromatography with suppressed conductivity detection. |
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| AN-H-017 |
Determination of bromide and chloride in photographic developer solutions |
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| Determination of bromide and chloride in photographic developer solutions. |
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| AN-C-106 |
Lanthanides by ion chromatography with post-column reaction and UV/VIS detection |
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| Determination of traces of lutetium, ytterbium, thulium, erbium, terbium, gadolinium, samarium, neodymium, praseodymium, cerium and lanthanum using cation chromatography with gradient elution and UV/VIS detection after post-column reaction with Arsenazo III. |
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| AN-C-098 |
Lanthanides by ion chromatography using non-suppressed conductivity detection |
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| Determination of traces of lutetium, ytterbium, thulium, erbium, terbium, gadolinium, samarium, neodymium, praseodymium, cerium and lanthanum using cation chromatography with direct conductivity detection. |
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| AB-207 |
Stripping voltammetric determination of silver |
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| This Application Bulletin describes the stripping analysis of Ag at the rotating disk electrode (RDE) with glassy carbon tip (GC) or Ultra Trace graphite tip. In routine operation, the determination limit lies at approx. 10 μg/L Ag, with careful work 5 μg/L Ag can be obtained. After appropriate digestion, silver determination is also possible with samples containing a relatively high proportion of organic substances (e.g. wine, foodstuffs etc.). The method has been developed primarily for water samples (well, ground and wastewater, desilvering solutions of the photographic industry). |
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| AB-199 |
Polarographic determination of sulfide and sulfite |
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| Sulfide and sulfite can be determined polarographically without any problems. For sulfide, polarography is performed in an alkaline solution, for sulfite in a slightly acidic primary solution. The method is suitable for the analysis of pharmaceuticals (infusion solutions), wastewater/flue gas water, photographic solutions, etc. |
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| AB-182 |
Potentiometric analysis of photographic baths |
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| This Bulletin describes the potentiometric determination of color developing, fixing and bleaching baths in the photo industry. Great value has been placed on being able to carry out all the analyses with a single titrator. Analysis instructions and examples are given for thirteen bath components. |
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| AB-072 |
Potentiometric determination of mercury or silver in the presence of halides |
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Halides interfere with most determinations of mercury or silver. However, if mercury or silver is titrated with sulfide ions, extremely insoluble sulfides are formed. A simple method is described that allows the direct titration of mercury(II) or silver(I) compounds in the presence of halides. The potentiometric titration takes place under alkaline conditions using thioacetamide as the titrant after formation of the EDTA complex. Organic compounds that are insoluble in alkaline EDTA can also be titrated after a Schoeniger digestion. |
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| 8.000.6009EN |
Determination of lanthanides by ion chromatography using non-suppressed conductivity and UV/VIS detection |
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The simultaneous ion chromatographic determination of trace-levels of lanthanides (or lanthanoides) was achieved by using either direct non-suppressed conductivity detection or UV/VIS detection after post-column reaction (PCR) with arsenazo III at 655 nm. Conductivity detection under isocratic conditions resulted in an overall analysis time of approx. 70 minutes. In contrast, the determination of the lanthanides via gradient elution and subsequent spectrophotometric detection of the arsenazo III-lanthanide(III) complexes was performed within 22 minutes. Besides the outstanding analysis time, UV/VIS detection excelled by its enhanced selectivity and sensitivity and did not suffer from interferences by ubiquitous non-lanthanide impurities such as iron(III) or other transition metals.
For both conductivity and spectrophotometric detection, the inclusion of sample preconcentration steps lowered the limit of detection (LOD) to the sub-ppb range.
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