Solution Test for

Once all of the precipitate has been transferred to the funnel, rinse it three more times with the NH4N03 solution. Test for chloride in the filtrate by acidifying a few millifiters of the most recent rinsings with dilute HN03 and adding AgN03 dropwise, as done in Experiment 6, step 11. Continue to rinse until all chloride is eliminated. 

Absorption spectra of the phenol-sulfuric acid solutions tested for total sugars show that 5-hydroxymethylfurfural from hexoses is more common in the uppermost Silurian and Devonian samples than in the earlier deposits. Furfurals from pentose sugars evidently form the bulk of the residual carbohydrates in these samples, however. There is no definite evidence as to the marine or terrestrial origin of the hexose products in the samples. 

Saturated potassium iodide solution, tested for stability (see recipe)... 

A portion of the sample is heated on the water-bath with 8% alcoholic potash until the fleshy mass is dissolved. The liquid is filtered off with the help of a pump and the residue on the filter washed with cold 95% alcohol and then boiled with 96% alcohol, which partially dissolves the glycogen but leaves the starch undissolved. The filtered liquid is evaporated on a water-bath, the residue taken up in a little water and the solution tested for glycogen by means of iodine,... 

About 50 or 60 grams of the sample, obtained by mixing the contents of one or more tins intimately with a mincer, are weighed in a porcelain dish, dried on a water-bath and carefully incinerated. The ash is evaporated to dryness with concentrated nitric acid and the residue taken up in very dilute nitric acid and filtered. The residue on the filter is tested for tin and antimony by the ordinary methods. The filtrate is evaporated to dryness with cone, hydrochloric acid, the residue being then taken up again in water acidified with hydrochloric acid and the solution tested for lead, copper, zinc, etc. 

The chemical examination of this product is usually limited to a few qualitative tests. A portion is treated with hot dilute hydrochloric acid, and the filtered liquid tested for calcium and sulphuric acid (chalk, gypsum). Another portion is either treated with hot concentrated sulphuric acid or fused with potassium bisulphate when cold the mass is treated with water and the solution tested for aluminium. 

European Pharmacopoeia (EP) 6.0 [6] and British Pharmacopoeia (BP) 2009 [7] use infrared absorption spectroscopy and a solution test for bromide ion to identify rocuronium bromide. For the infrared absorption... 

Uses As a reducer (acid solution) test for hypo hypo eliminator stain remover and bleacher in redevelopment. 

Chloride in the presence of bromide Warm the solid mixture with a little potassium dichromate and concentrated sulphuric acid in a small distilling flask (Fig. IV. 1), and pass the vapours, which contain chromyl chloride, into sodium hydroxide solution. Test for chromate, which proves the presence of a chloride, with hydrogen peroxide and amyl alcohol or with the diphenyl-carbazide reagent. 

VIII.5 TESTING FOR ANIONS IN SOLUTION Tests for anions should be carried out in the order as given below. 

The precipitate obtained, if any, using Procedure 1 is collected and the remaining solution tested for additional ions using Procedure 2. 

The residue B, if black, is dissolved in hot HNOa, and the solution tested for Cu. If it be white, it is ignited, with the filter, in a porcelain crucible fused with" tas.sium eyanid and washed with HaO. The residue is extracted with warm HCl, and the solution tested for Sn. If any residue remain, it is extracted with HCI, to which a few drops of HNOa have been added, and the solution tested for Sb. 

The irony of the situation is that this health hazard does have workable solutions. Testing for radon is easy and relatively inexpensive. Likewise, remedial action techniques. .. do not usually carry costs. And yet, fewer than 25 States have any kind of radon-reduction programs in place. To start getting these solutions in place, we need legislation to provide guidance, information, and assistance. 

Nonvolatile Content of Urea-Formaldehyde Resin Solutions, Test for Nonvolatile Content of Phenol, Resorcinol, and Melamine Adhesives, T st for (D1582)... 

Zhai et al. [176] utilized an in vitro model to compare the decontamination efficacy of tap water, isotonic saline, and hypertonic saline mixed with " C-radiolabeled glyphosate [176], After exposure, the skin samples were washed three times with 4 mL of each solution. The tape stripping method was used to collect SC samples, and these were analyzed by liquid scintillation counting to determine the radioactivity. Their results showed that there were no statistically significant differences between the various decontamination solutions tested for glyphosate. The total mass removed and the wash-off rates at three different exposure durations ranged from 94.8 to 102.4 % and 79 to 101.2 %, respectively. Therefore, all tested decontamination solutions were similarly effective [176]. 

A small sample is ashed in a micro crucible, and the residue fused with a crystal of potassium bisulfate. The melt is dissolved in a few drops of hot water and the solution tested for aluminum by (i) or (2). 

Zinc may be precipitated from mixtures withMn, Co and Ni from an armnonia-cal solution by HS". Digestion of the precipitate with cold, dilute HCl dissolves the MnS and ZnS. Then the solution is boiled to eliminate H2S, and the Zn changed to [Zn(OH)4] by an excess of OH" plus some Br2, H2O2, or CIO", which precipitate the Mn " as Mn02-aq. The excess oxidant is destroyed and the resulting solution tested for Zn ", perhaps by adding H2S to give ZnS. 

A Cu -taitrate complex, Fehling s solution, tests for arsenite ... 

If an insoluble but possible iodide is encountered, it may be treated with Zn and perhaps some H2SO4, and the solute tested for F ... 

Nonvolatile Content of Urea-Formaldehyde Resin Solutions, Test for (D 1490)... 

---