June 2003 Sampling and Analysis Protocol for Ontario Regulation 267/03 Made under the Nutrient Management Act, 2002

Part 6 - Glossary

Ammonium Nitrogen: Means ammonia nitrogen plus ammonium nitrogen.

Analytical Run: A group of samples processed together through each step of an analytical procedure.

Analytical Standard: A series of chemical standards of the target analytes, used to set the relationship between instrument response and concentration

Blank, Method Blank: Pure Water or other type of blank (ie. acid or solvent) used to monitor for contaminated reagents, glassware and method processes.

Composite Sample: A sample that is made up of a number of grab samples that have been thoroughly mixed together.

Contaminant: Means any solid, liquid, gas, odour, heat, sound, vibration, radiation or combination of any of them resulting directly or indirectly from human activities that may cause an adverse effect.

CRM: Certified reference material; matrix sample containing analytes at concentration values which have been certified by multiple laboratory analysis:

Duplicate Sample: One of two samples collected at a sampling point at the same time in a manner that minimizes differences between the samples.

Geo-Reference: A specific set of coordinates within a numeric system of grid references [e.g. latitude/longitude or UTM (Universal Transverse Mercator)] used to precisely identify a geographic location.

Global Positioning System: Method of determining geo-reference using a GPS receiver.

Grab Sample: A single sample taken directly from the material being sampled, sub sample or a portion of a composite sample.

Internal Standard: A compound, representative of the compound(s) of interest and not expected to be found in the matrix, spiked into every sample extract and solution analyzed. It monitors losses/gains due to the analytical procedure. Data may or may not be corrected based on the calculated recovery.

Matrix: Any type of material, e.g. soil, manure, sewage sludge.

Matrix Check Material: Matrix check materials are, typically, natural materials subjected to method processes in order to monitor method recovery. They are often in-house sample composites that have an established value and characteristics.

NMAN: A computer program of that name prepared by OMAF for the purpose of preparing nutrient management plans, as well as the workbook that can be used to prepare plans manually.

Nitrate Nitrogen: Means nitrate nitrogen plus nitrite nitrogen.

Nutrient: A compound or element that is absorbed and utilized by plants in the process of their growth and reproduction.

Nutrient Management Plan: A plan for the application of materials containing nutrients to land in such a way that agronomic requirements of crops are met, and environmental impacts are minimized.

Nutrient Unit: The amount of nutrients that give the fertilizer replacement value of the lower of 43 kilograms of nitrogen or 55 kilograms of phosphate.

Quality Management System: A set of interrelated elements (e.g. policies and objectives) that direct and control the way a facility operates with regard to quality.

Replicate Analyses: Natural samples may be split in the laboratory and analyzed together in the same run. Replicates are taken through the entire method process. This data can be used to assess the within-run precision of the analysis or sample matrix homogeneity.

Replicate Sample: An additional or second aliquot (portion) of a randomly selected sample in the analytical run.

Representative Sample: A sample of material that has been taken so that it has essentially the same composition and characteristics of the source material.

Spiked Samples: Analyte(s) of interest is spiked into the sample matrix in order to monitor recovery from the sample matrix using the method or parts of the method.

Spiked Water/Solvent: Analyte(s) of interest is spiked into reagent water/solvent to monitor recovery because of changes in the method or parts of the method.

Standard Additions: The addition of known quantities of the analyte of interest to one or more split portions of a single sample can be used to determine the presence and possible effect of interference by various matrix constituents on the analytical method.

For more information:
Toll Free: 1-877-424-1300
E-mail: ag.info.omafra@ontario.ca
Author: OMAFRA Staff
Creation Date: 30 June 2003
Last Reviewed: 30 June 2003