sampling point
Gade / G.U.C. At Hunton Bridge
| Description | GADE / G.U.C. AT HUNTON BRIDGE |
|---|---|
| Sampling point ID | TH-PCNR0060 |
| Type | Freshwater – Rivers |
| Status | closed |
| Location |
easting northing: 508200 200500 lat lon: 51.692828, -0.435987 |
| Area | Hertfordshire And North London |
| Sub-Area | L&W Herts & North London |
| Summary | 129 samples taken between 2010 and 2000 |
Determinands
Determinands identify a property which can be measured on a sample or the sampling environment, together with the units in which the result of that measurement will be expressed.
31 determinands have been measured at this site
- Action taken
- Alky pH 4.5
- Ammonia(N)
- BOD ATU
- CHLOR A
- CHLOROPHYLL
- Calcium - Ca
- Chloride Ion
- Cond @ 20C
- Cond @ 25C
- Copper - Cu
- Cu Filtered
- Hardness
- Magnesium-Mg
- N Oxidised
- NH3 un-ion
- Nitrate-N
- Nitrite-N
- O Diss %sat
- Oil & Grs Vs
- Orthophospht
- Oxygen Diss
- Phenol Odour
- SI-EC-F
- SI-GQA
- Sld Sus@105C
- Temp Water
- Type of Flow
- Zinc - as Zn
- pH
- pH in-situ
Sampling results
Displaying the twenty most recent samples. You can see all 129 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).
Samples from 13 Nov 2009 to 24 Aug 2010
| Notation | Determinand | Units | 13 Nov 2009 11:30 | 9 Dec 2009 11:30 | 5 Jan 2010 11:20 | 10 Feb 2010 11:00 | 4 Mar 2010 11:10 | 9 Apr 2010 10:40 | 12 May 2010 11:00 | 7 Jun 2010 11:00 | 6 Jul 2010 11:40 | 24 Aug 2010 12:40 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 8.04 | 7.84 | 8.04 | 8.08 | 7.96 | 7.96 | |||||
| 0076 | Temperature of Water | °C | 9.49 | 8.56 | 2.79 | 4.63 | 6.13 | 10.31 | ||||
| 0077 | Conductivity at 25 C | μs/cm | 563 | 582 | 665 | 642 | 625 | 632 | ||||
| 0085 | BOD : 5 Day ATU | mg/l | 2 | < 1 | 1.4 | 1.7 | 2 | 2 | ||||
| 0111 | Ammoniacal Nitrogen as N | mg/l | 0.034 | 0.039 | 0.038 | < 0.03 | < 0.03 | < 0.03 | ||||
| 0116 | Nitrogen, Total Oxidised as N | mg/l | 4.23 | 4.31 | 5.47 | 5.31 | 5.12 | 4.82 | ||||
| 0117 | Nitrate as N | mg/l | 4.2 | 4.29 | 5.44 | 5.29 | 5.1 | 4.8 | ||||
| 0118 | Nitrite as N | mg/l | 0.0268 | 0.0209 | 0.0256 | 0.0185 | 0.0178 | 0.0177 | ||||
| 0119 | Ammonia un-ionised as N | mg/l | 0.0006 | 0.00045 | 0.00041 | < 0.00037 | < 0.00038 | < 0.00051 | ||||
| 0135 | Solids, Suspended at 105 C | mg/l | 22.4 | 5.5 | 4.1 | < 3 | 4.3 | 10.8 | ||||
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 235 | 224 | 249 | 251 | 241 | 259 | ||||
| 0180 | Orthophosphate, reactive as P | mg/l | 0.103 | 0.112 | 0.106 | 0.095 | 0.101 | 0.139 | ||||
| 0664 | Visible oil or grease, significant trace: Present/Not found (1/0) | pres/nf | 0 | 0 | 0 | 0 | 0 | 0 | ||||
| 6450 | Copper, Dissolved | μg/l | 2.8 | 1.9 | 1.7 | 2.01 | 1.8 | 1.2 | ||||
| 6455 | Zinc | μg/l | 23.1 | 8.4 | 6.42 | 6.8 | 7.1 | 7.87 | ||||
| 6841 | Phenolic Odour | pres/nf | 0 | 0 | 0 | 0 | 0 | 0 | ||||
| 7887 | Chlorophyll : Acetone Extract | μg/l | 25.5 | 11.8 | 9.7 | 12.1 | 15.4 | 23.9 | 36 | 28.4 | 32.2 | 62.7 |
| 9901 | Oxygen, Dissolved, % Saturation | % | 92.4 | 89.3 | 95.1 | 99.6 | 102.3 | 103.6 | ||||
| 9924 | Oxygen, Dissolved as O2 | mg/l | 10.5 | 10.4 | 12.9 | 12.8 | 12.7 | 11.6 |