SU929544A1 - Method for photometrically detecting nitrate ions - Google Patents
Method for photometrically detecting nitrate ions Download PDFInfo
- Publication number
- SU929544A1 SU929544A1 SU802932272A SU2932272A SU929544A1 SU 929544 A1 SU929544 A1 SU 929544A1 SU 802932272 A SU802932272 A SU 802932272A SU 2932272 A SU2932272 A SU 2932272A SU 929544 A1 SU929544 A1 SU 929544A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- nitrate ions
- detecting nitrate
- order
- photometrically detecting
- solution
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 11
- 229910002651 NO3 Inorganic materials 0.000 title claims description 3
- -1 nitrate ions Chemical class 0.000 title claims description 3
- 230000035945 sensitivity Effects 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims 2
- 239000003153 chemical reaction reagent Substances 0.000 claims 2
- 238000005259 measurement Methods 0.000 claims 1
- 229910052757 nitrogen Inorganic materials 0.000 claims 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 6
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 3
- 229960004889 salicylic acid Drugs 0.000 description 3
- 238000005121 nitriding Methods 0.000 description 2
- SNCJAJRILVFXAE-UHFFFAOYSA-N 9h-fluorene-2,7-diamine Chemical compound NC1=CC=C2C3=CC=C(N)C=C3CC2=C1 SNCJAJRILVFXAE-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011365 complex material Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 150000002828 nitro derivatives Chemical class 0.000 description 1
- 238000005375 photometry Methods 0.000 description 1
- 230000001373 regressive effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Description
(5) СПОСОБ ФОТОМЕТРИЧЕСКОГО ОПРЕДЕЛЕНИЯ НИТРАТ-ИОНОВ(5) METHOD OF PHOTOMETRIC DETERMINATION OF NITRATE-IONS
- ; 1 V.. Изобретение относитс к области аналитической химии и может быть использовано дл экспрессного фотомет рического определени нитрат-иона в сложных материалах и растворах, напри мер в СТОЧНЫХ водах. Известен способ определени нитрат-иона с салициловой кислотой, который заключаетс в следующем: нитраты в кислой среде перевод т салициловую кислоту в ее нитропроизводное желтого цвета. Реакци нитрировани приходит в концентрированной или в 7 %-нон растворе серной кислоты в течение 30 мин. фотометрирование продукта нитрировани ведут в 20Х-НРМ растворе едкого натра 1. Недостатком этого способа вл етс получение заниженных результатов анализа за счет галогенид-ионов, устранение мешающего вли ни которых в спо собе не предусмотрено, а таюне за счёт возможного сульфировани салициловой кислоты. Реакци нитровани проходит в течение 30 мин, а окраскп нитропродукта устойчива только 10 ми. Кроме того, способ имеет невысокую чувствительность - О, мкг/мл, а тaкжe как было нами установле ю методом регрессивного анализа, имеет систематическую погрешность. Наиболее близким по технической сущности и достигаемому результату к предлагаемому вл етс способ фотометрического определени иона нитрата с 2,7-диаминофлуореном. Чувствительность метода 0,07 мкг нитрата в 1 мл 2lo Однако устойчивость образующегос нитропродукта невысока , так как спуст ч прибор регистрирует заметное падение оптической плотности раствора. Кроме того, другим недостатком известного способа вл етс высока чувствительность к содержанию воды а концентрированной серной кислоте. Довольно острый максимум-; 1 V .. The invention relates to the field of analytical chemistry and can be used for the express photometric determination of nitrate ion in complex materials and solutions, for example in SEWAGE waters. A known method for determining nitrate ion with salicylic acid is as follows: nitrates in an acidic medium convert salicylic acid to its yellow nitro derivative. The nitriding reaction comes in a concentrated or in a 7% non-sulfuric acid solution for 30 minutes. Photometry of the nitriding product is carried out in 20X-HPM caustic soda solution 1. The disadvantage of this method is to obtain underestimated results of analysis due to halide ions, the elimination of the interfering effects of which in the process is not provided, and the example due to possible salicylation of salicylic acid. The nitration reaction takes place within 30 minutes, and the color of the nitroproduct is stable only 10 minutes. In addition, the method has low sensitivity - O, µg / ml, and also as we established it by the method of regressive analysis, it has a systematic error. The closest in technical essence and the achieved result to the proposed is a method of photometric determination of nitrate ion with 2,7-diaminofluorene. The sensitivity of the method is 0.07 μg of nitrate in 1 ml of 2lo. However, the stability of the resulting nitroproduct is low, since after the instrument reads a noticeable drop in the optical density of the solution. In addition, another disadvantage of the known method is the high sensitivity to the water content of concentrated sulfuric acid. Pretty sharp maximum
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU802932272A SU929544A1 (en) | 1980-04-14 | 1980-04-14 | Method for photometrically detecting nitrate ions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU802932272A SU929544A1 (en) | 1980-04-14 | 1980-04-14 | Method for photometrically detecting nitrate ions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU929544A1 true SU929544A1 (en) | 1982-05-23 |
Family
ID=20898770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU802932272A SU929544A1 (en) | 1980-04-14 | 1980-04-14 | Method for photometrically detecting nitrate ions |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU929544A1 (en) |
-
1980
- 1980-04-14 SU SU802932272A patent/SU929544A1/en active
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