美国CHEMetrics R-1501型氨填充盒
用于测试水中氨含量。例如：饮用水，清洁地表水，优质硝化废水，海水。是使用K-1510型氨测试盒中的补充品。
规格参数：
|
产品类型 |
Ammonia — CHEMets® Refill |
|
产品型号 |
R-1501 |
|
测试方法 |
直接奈瑟琳化方法 |
|
测试次数 |
30次/盒 |
|
产品价格 |
咨询上海益朗仪器有限公司 |
|
辅助器具 |
C-1501型低范围氨比色筒、C-1510型高范围氨比色板、A-1500型稳定剂溶液、A-1501型稳定剂溶液、A-0027型1mL移液器、A-0013型25mL样品杯 |
CHEMets® 是美国CHEMetrics的专利（专利号：3,634,038）。
美国CHEMetrics 氨测试盒
Visual Kits
|
测试范围 |
MDL |
测试方法 |
测试盒货号 |
填充盒货号 |
|
0-4 & 0-80 ppm |
0.125 ppm |
Hydroxybenzyl Alcohol (HBA) |
K-1420 |
R-1402 |
|
0-125 & 0-2500 ppm |
8 ppm |
Hydroxybenzyl Alcohol (HBA) |
K-1420D |
R-1402D |
|
0-500 & 0-10000 ppm |
30 ppm |
Hydroxybenzyl Alcohol (HBA) |
K-1420B |
R-1402B |
|
0-1 & 1-10 ppm |
0.05 ppm |
直接奈瑟琳化方法 |
K-1510 |
R-1501 |
|
0-30 & 30-300 ppm |
5 ppm |
直接奈瑟琳化方法 |
K-1510D |
R-1501D |
|
0-60 & 60-600 ppm |
10 ppm |
直接奈瑟琳化方法 |
K-1510A |
R-1501A |
|
0-120 & 120-1200 ppm |
20 ppm |
直接奈瑟琳化方法 |
K-1510B |
R-1501B |
|
0-1000 & 1000-10,000 ppm |
100 ppm |
直接奈瑟琳化方法 |
K-1510C |
R-1501C |
Instrumental Kits
|
测试范围 |
测试方法 |
测试包目录 |
|
0-3.00 & 0-60.0 ppm |
Hydroxybenzyl Alcohol (HBA) |
K-1413 |
|
0-7.00 ppm |
直接奈瑟琳化方法 |
K-1503 |
|
0-14.0 ppm |
直接奈瑟琳化方法 |
K-1523 |
Methods
Low-level ammonia nitrogen may be naturally present in water as a result of the biological decay of plant and animal matter. Higher concentrati*** in surface waters can indicate contamination from waste treatment facilities, raw sewage, industrial effluents (particularly from petroleum refineries), or fertilizer runoff. Excessive ammonia concentrati*** are toxic to aquatic life.
The Direct Nesslerization Method
Reference: ASTM D 1426-08, Ammonia Nitrogen in Water, Test Method A. APHA Standard Methods, 18th ed., Method 4500-NH3 C – 1988.
The test kits employing the well-established Nessler reagent* to determine ammonia concentrati*** are applicable to drinking water, clean surface water, good-quality nitrified wastewater effluent, and seawater. In some waters, calcium and magnesium concentrati*** can cause cloudiness of the reagent. Adding a few drops of stabilizer solution (Rochelle Salt) will prevent this cloudiness. References recommend distilling samples prior to analysis. Results are expressed as ppm (mg/L) ammonia-nitrogen, NH3-N.
Shelf-life: although the Nessler reagent is stable, its high alkali content attacks the glass ampoule. The resulting precipitate interferes with color comparison. We recommend stocking quantities of CHEMets® and VACUettes® ampoules that will be used within five months. A two-month supply of Vacu-vials ampoules is suggested. Refrigeration will dramatically extend the shelf-life of these products.
*Contains mercury. Dis***e according to local, state or federal laws.
The Hydroxybenzyl Alcohol (HBA) Method
References: Krom, Michael D., Spectrophotometric Determination of Ammonia: A Study of a Modified Berthelot Reduction Using Salicylate and Dichloroisocyanurate, The Analyst, V105, pp. 305-316, 1980.
In the ammonia test method that employs the Hydroxybenzyl Alcohol chemistry, free ammonia reacts with hypochlorite to form monochloramine. Monochloramine reacts with HBA, in the presence of sodium nitroferricyanide, to form a green colored complex. This test method measures the sum of free ammonia and monochloramine. Results are expressed in ppm (mg/L) ammonia-nitrogen, NH3-N.
The Hydroxybenzyl Alcohol Method offers sensitivity similar to the Nesslerization Method and there is no generation of mercury-containing waste.