NANOCOLOR MN 918128 NanOx Metal Instructions

: August 10, 2024
: NANOCOLOR

Table of Contents

NANOCOLOR MN 918128 NanOx Metal
Product Information
Product Usage Instructions
Method
Contents of reagent set
Preliminary tests
Interferences
Procedure
Measurement
Disposal
Read User Manual Online (PDF format)
Download This Manual (PDF format)

NANOCOLOR MN 918128 NanOx Metal

Product Information

Specifications:

Product Code: REF 918128
Method: Photometric determination of iron content by the triazine method
Reagent Set Contents: 300 mL iron LR R1, 20 g iron LR R2, 1 measuring spoon (70 mm)
Measurement Time: 5 minutes (300 seconds)

Product Usage Instructions

Sample Preparation:

1. In a 25mL volumetric flask, place 20 mL sample solution with pH between 1 and 7.
2. Add 3 mL of R1 to the flask and mix well.
3. Add 1 measuring spoon of R2 to the mixture.
4. Fill up the flask to 25 mL with distilled water and mix thoroughly.

Measurement:

1. Pour the prepared solution into cuvettes after a 3-minute reaction time.
2. Clean the outside of the cuvettes before measuring.
3. For iron determination in a 10mm cuvette, a reaction time of 5 minutes is recommended.

Determination of Iron(II) Ions:
Follow the same procedure as above but omit the addition of reagent ion R2.
Measurement for Other Photometers:
For photometers of other manufacturers, adjust the factor based on standard solutions for accurate measurements.
Quality Assurance and Disposal:
For analytical quality assurance, consider using NANOCONTROL Multistandard Metals 1 or Multistandard Drinking Water. Refer to the safety data sheet for disposal instructions.
Reduced Analytical Procedures:
To increase the number of determinations, prepare 10 mL solutions in volumetric flasks with adjusted reagent quantities. Evaluate results in a semi-micro cuvette.
PD Information:
For further information, refer to PD 14122/A063619/918128/0710.3

Frequently Asked Questions (FAQ)

Q: Can the sample solution be used as a blank value without additional reagent?
A: Yes, in the iron determination in a 10mm cuvette, the sample solution can be used as a blank value without additional reagent.
Q: Where can I find information on disposal?
A: Information regarding disposal can be found in the safety data sheet available for download at www.mn-net.com/SDS.

Method

Photometric determination of iron content by the triazine method.

Rectangular cuvette
- 50 mm
- 10 mm
Measuring range (mg/L Fe)
- 0.005–0.500
- 0.05–5.00
Measuring wavelength (HW = 5–12 nm) 563 nm/540 nm
Reaction time
- 3 min (180 s)
- 5 min (300 s)
Reaction temperature 20–25 °C

Contents of reagent set

300 mL iron LR R1
20 g iron LR R2
1 measuring spoon 70 mm

Preliminary tests

If there is uncertainty regarding the level of the concentration in the sample to be tested, a preliminary test with QUANTOFIX® Total Iron 100 (2–100 mg/L Fe, REF 91344) rapidly provides this information. This allows the dilution required for the determination to be calculated and prepared directly.

Interferences

To test for the absence of interfering complexing agents we recommend a preliminary test with NANOCOLOR® organic complexing agent 10 (REF 985052).
The following will not interfere: ≤ 0.5 mg/L Co2+; ≤ 5 mg/L Al3+, Mn2+, MoO42−; ≤ 10 mg/L Cu2+*, Hg2+, Ni2+, Pb2+, CN−; ≤ 50 mg/L Cr2O72−, NO2−; ≤ 500 mg/L Ca2+, Zn2+; ≤ 750 mg/L PO42−; ≤ 1000 mg/L Cd2+, Mg²+, NH4+, SiO32−; < 1 % nonionic surfactants, cationic surfactants; ≤ 1 % anionic surfactants; ≤ 5 % sodium acetate; ≤ 20 % NaNO3.
- add 500 mg thiourea per 20 mL sample
The method is also suitable for the analysis of seawater. A prolonged reaction time of 5 min may be necessary.

Procedure

Required accessories:
Volumetric flask 25 mL (REF 91661), 10 mm and 50 mm rectangular cuvettes (REF 91933 and 91935), piston pipettes with tips

Sample	Blanc value [1]

In a 25‑mL volumetric flask:

Place 20 mL sample solution (the pH of the sample must be between pH = 1 and pH = 7),

add 3 mL R1, mix,

add 1 measuring spoon of R2

| In a 25‑mL volumetric flask, place:

20 mL distilled water, add 3 mL R1, mix,

add 1 measuring spoon of R2

Fill up the sample and blank the value with distilled water to 25 mL and mix. After 3 min[2] pour into the cuvettes, clean the outside of the cuvettes, and measure.

In the iron determination in the 10‑mm cuvette, the sample solution can also be used without the addition of reagent as a blank value.
For the iron determination in the 10‑mm cuvette, a reaction time of 5 min is recommended.

Determination of iron(II) ions:
Procedure as described above, but without reagent ion R2.

Measurement

For MACHEREY‑NAGEL photometers see manual, test 1‑28. Photometers of other manufacturers: Check the factor for each type of device by measuring standard solutions.

Analytical quality assurance:
NANOCONTROL Multistandard Metals 1 (REF 925015) or Multistandard Drinking Water (REF 925018)
Reduced analytical procedures:
To increase the number of determinations, 10 mL can be prepared in volumetric flasks: 8 mL sample solution + 1.2 mL R1 + 1 measuring spoon of R2. The evaluation is then performed in a semi‑micro cuvette (REF 91950).