Table 6.
Summary table of anovas for EC. The experiment is given in the first column and factors in the second. F statistic (F), degrees of freedom (d.f.) and P-values are given for each sand. The error term is omitted for simplicity. In the case of the last experiment (effect of mass/shaking duration/type) where a three-way anova was used, ‘n/a’ indicates that factor was not relevant for the model.
| Sand 1 |
Sand 2 |
Sand 3 |
||
|---|---|---|---|---|
| Experiment | Factor(s) | F, d.f., P | F, d.f., P | F, d.f., P |
| Rinse | Number of rinses | 1·80, 2, 0·24 | 0·11, 2, 0·90 | 3·5, 2, 0·10 |
| Analyst | 1·14, 1, 0·33 | 0·49, 1, 0·51 | 4·51, 1, 0·08 | |
| Analyst × Number of rinses | 1·76, 2, 0·25 | 1·94, 2, 0·22 | 4·99, 2, 0·053 | |
| Decanting | Pipette or pour | 0·79, 1, 0·42 | 0·73, 1, 0·44 | 0·42, 1, 0·56 |
| Analyst | 9·50, 1, 0·04* | 0·34, 1, 0·59 | 0·10, 1, 0·77 | |
| Analyst × pipette / pour | 0·54, 1, 0·50 | 0·01, 1, 0·92 | n/a | |
| Settling | Settling time | 5·60, 2, 0·04* | 0·19, 2, 0·83 | 8·75, 2, 0·02* |
| Analyst | 14·98, 1, 0·008* | 0·33, 1, 0·58 | 4·07, 1, 0·09 | |
| Analyst × settling time | 2·18, 2, 0·19 | 0·64, 2, 0·56 | 2·93, 2, 0·13 | |
| Eluant | Eluant composition | 26·75, 4, <0·001* | 1·02, 4, 0·44 | 3·74, 4, 0·04* |
| Analyst | 3·93, 1, 0·76 | 0·41, 1, 0·54 | 1·14, 1, 0·31 | |
| Analyst × eluant | 2·62, 4, 0·99 | 0·42, 4, 0·79 | 0·69, 4, 0·61 | |
| Sonication | Sonication | 0·60, 1, 0·47 | 1·96, 1, 0·21 | 4·98, 1, 0·07 |
| Prefiltration | Prefiltration | 0·98, 1, 0·38 | 7·66, 1, 0·05 | 0·94, 1, 0·39 |
| Analyst | 0·12, 1, 0·74 | 0·15, 1, 0·72 | 0·82, 1, 0·42 | |
| Analyst × prefiltration | 0·10, 1, 0·77 | 1·35, 1, 0·31 | 0·14, 1, 0·73 | |
| Blending | Blending | 0·60, 1, 0·48 | 17·64, 1, 0·01* | 0·29, 1, 0·62 |
| Analyst | 0·55, 1, 0·83 | 0·47, 1, 0·53 | 0·44, 1, 0·55 | |
| Analyst × blending | 0·01, 1, 0·93 | 0·31, 1, 0·61 | 0·93, 1, 0·39 | |
| Mass/shaking | Analyst | 0·75. 1, 0·40 | 2·52, 1, 0·13 | 10·47, 1, 0·005* |
| Mass | 7·00, 2, 0·006* | 1·31, 2, 0·30 | 0·74, 2, 0·49 | |
| Shaking | 7·74, 2, 0·004* | 1·48, 2, 0·25 | 3·74, 2, 0·04* | |
| Analyst × mass | 0·32, 2, 0·73 | 1·52, 2, 0·25 | 1·30, 2, 0·30 | |
| Analyst × shaking | 1·91, 2, 0·18 | 0·44, 2, 0·65 | 0·64, 2, 0·54 | |
| Mass × shaking | 4·47,4, 0·011* | 2·01, 4, 0·14 | 1·64, 4, 0·21 | |
| Analyst × mass × shaking | 0·40, 4, 0·80 | 0·61, 4, 0·66 | 1·47, 4, 0·25 |
Significant factors are shown in bold with a ‘*’