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2. Does the method contain

system suitability tests or

controls as specified by the

SMPR? If not, please indicate

if there is a need for such

tests or controls and which

ones.

Yes the method contains system suitability test including duplicate injections of

standard solution and calibration standard.

3. Is there information

demonstrating that the

method system suitability

tests and controls as

specified in the SMPR worked

appropriately and as

expected? If no, please

specify.

Repeatability results obtained using the SRM 3254 reference material showed many

bad data. This is the case of GC (14.9 %), C (10.8 %), EC (5.16 %), GCG (5.72 %) and

ECG (5.66 %). The AOAC SMPR 2015.014 indicated teh obtained values should be

less or equal to 5.

Repeatability results with the SRM 3255 reference material showed good results.

Repeatability results with the SRM 3256 reference material showed good results

except for GC and C where bad values have been obtained (5.57 and 8.94 %

respectively).

4. Based on the supporting

information, is the method

written clearly and concisely?

If no, please specify the

needed revisions.

Yes

5. Based on the supporting

information, what are the

pros/strengths of the

method?

The proposed method is rapid, simple and robust. The optimized used

chromatographic conditions gave chromatographic profiles where the investigated

analytes are separated during a relatively short time.

6. Based on the supporting

information, what are the

cons/weaknesses of the

method?

Not all the method performance requirements are performed.

Does not meet the SMPR

7. Any general comments

about the method?

No

Do you recommend this

method be adopted as a First

Action and published in the

Official Methods of Analysis

of AOAC INTERNATIONAL?

Please specify rationale.

I do not recommend this method be adopted as a first action in the present form. I think

that more experiments are needed and should concern all the performance

requirements indicated in the 2015.014 SMPR.